[Bug 2151640] Re: Falling back to default sources raises AttributeError if archive.ubuntu.com is unreachable
Simon Johnsson
2151640 at bugs.launchpad.net
Wed May 6 15:55:47 UTC 2026
** Description changed:
If the upgrader fails its url_downloadable check from
http://archive.ubuntu.com (while apt update succeeds), it will prompt
for the default sources to be restored. If yes is selected, an
AttributeError will be raised as the _addDefaultSources() function
attempts to set a property (suites) without a setter.
- Example:
+ In this case the url_downloadable fails since it receives "403:
+ Forbidden".
+ Interestingly this error does not occur if the apt update fails.
- Reading cache
+ ## Example 1 (apt update succeeds):
- Checking package manager
+ ...
- Reading package lists... 0%
+ Hit http://archive.ubuntu.com/ubuntu noble InRelease
+ Hit http://security.ubuntu.com/ubuntu noble-security InRelease
+ Hit http://archive.ubuntu.com/ubuntu noble-updates InRelease
+ Hit http://archive.ubuntu.com/ubuntu noble-backports InRelease
+ Fetched 0 B in 0s (0 B/s)
- Reading package lists... 100%
-
- Reading package lists... Done
-
- Building dependency tree... 0%
-
- Building dependency tree... 0%
-
- Building dependency tree... 50%
-
- Building dependency tree... 50%
-
- Building dependency tree... Done
-
- Reading state information... 0%
-
- Reading state information... 0%
-
-
- Reading state information... Done
-
- 0% [Working]
- 0% [Working]
- 0% [Connecting to archive.ubuntu.com]
- 0% [Connecting to archive.ubuntu.com]
- 0% [Connecting to archive.ubuntu.com (104.20.28.246)]
- 0% [Connecting to archive.ubuntu.com (104.20.28.246)]
- 0% [Connecting to archive.ubuntu.com (104.20.28.246)]
- 0% [Connecting to archive.ubuntu.com (104.20.28.246)]
- 0% [Connected to archive.ubuntu.com (104.20.28.246)]
- 0% [Connected to archive.ubuntu.com (104.20.28.246)]
- 0% [Waiting for headers] [Connecting to security.ubuntu.com]
- 0% [Waiting for headers] [Connecting to security.ubuntu.com]
- 0% [Waiting for headers]
- 0% [Waiting for headers]
- 0% [Waiting for headers] [Connected to security.ubuntu.com (172.66.152.176)]
- 0% [Waiting for headers] [Connected to security.ubuntu.com (172.66.152.176)]
- 0% [Waiting for headers] [Waiting for headers]
- 0% [Waiting for headers] [Waiting for headers]
- Hit http://archive.ubuntu.com/ubuntu noble InRelease
-
- 0% [Waiting for headers]
- 0% [Waiting for headers]
- 0% [Waiting for headers] [Waiting for headers]
- 0% [Waiting for headers] [Waiting for headers]
- Hit http://security.ubuntu.com/ubuntu noble-security InRelease
-
- 0% [Waiting for headers]
- 0% [Waiting for headers]
- 87% [Waiting for headers]
- 87% [Waiting for headers]
- 87% [Waiting for headers]
- 87% [Waiting for headers]
- 95% [Waiting for headers]
- 95% [Waiting for headers]
- Hit http://archive.ubuntu.com/ubuntu noble-updates InRelease
-
- 95% [Working]
- 95% [Working]
- 95% [Waiting for headers]
- 95% [Waiting for headers]
- 97% [Waiting for headers]
- 97% [Waiting for headers]
- Hit http://archive.ubuntu.com/ubuntu noble-backports InRelease
-
- 97% [Working]
- 97% [Working]
- 97% [Working]
- 97% [Working]
- 99% [Working]
- 99% [Working]
- Fetched 0 B in 0s (0 B/s)
-
- Reading package lists... 0%
-
- Reading package lists... 100%
-
-
- Reading package lists... Done
-
- Building dependency tree... 0%
-
- Building dependency tree... 0%
-
- Building dependency tree... 50%
-
- Building dependency tree... 50%
-
-
- Building dependency tree... Done
-
- Reading state information... 0%
-
- Reading state information... 0%
-
-
- Reading state information... Done
- No snaps are installed yet. Try 'snap install hello-world'.
-
- Checking for installed snaps
-
- Calculating snap size requirements
+ ...
Updating repository information
Required apt sources are missing
- This is probably because one or more of the following mirrors are
- out-of-date or unreachable:
+ This is probably because one or more of the following mirrors are
+ out-of-date or unreachable:
http://archive.ubuntu.com/ubuntu
+
+ Would you like to continue the upgrade using default sources? If you
+ select 'No', the upgrade will be aborted.
+
+ Continue [yN] y
+
+ Traceback (most recent call last):
+ File "/tmp/ubuntu-release-upgrader-7d18weqn/resolute", line 8, in <module>
+ sys.exit(main())
+ ^^^^^^
+ File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeMain.py", line 235, in main
+ if app.run():
+ ^^^^^^^^^
+ File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 2014, in run
+ return self.fullUpgrade()
+ ^^^^^^^^^^^^^^^^^^
+ File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1876, in fullUpgrade
+ if not self.updateDeb822Sources():
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^
+ File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1061, in updateDeb822Sources
+ if not self.rewriteDeb822Sources():
+ ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+ File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1048, in rewriteDeb822Sources
+ self._addDefaultSources()
+ File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 805, in _addDefaultSources
+ e.suites = sorted([self.toDist, self.toDist + '-updates'],
+ ^^^^^^^^
+ AttributeError: property 'suites' of 'ExplodedDeb822SourceEntry' object has no setter
+
+ ## Example 2 (apt update fails/non-default source is used)
+
+ ...
+
+ Could not resolve 'refridgerator.ubuntu.com'
+
+ Err http://refridgerator.ubuntu.com/ubuntu noble-updates InRelease
+
+ Could not resolve 'refridgerator.ubuntu.com'
+
+ Err http://refridgerator.ubuntu.com/ubuntu noble-backports InRelease
+
+ Could not resolve 'refridgerator.ubuntu.com'
+
+ Err http://refridgerator.ubuntu.com/ubuntu noble-security InRelease
+
+ Could not resolve 'refridgerator.ubuntu.com'
+
+ ...
+
+ Updating repository information
+
+ Required apt sources are missing
+
+ This is probably because of one or more of the following unsupported
+ mirrors was disabled:
+
+ http://refridgerator.ubuntu.com/ubuntu
+ http://refridgerator.ubuntu.com/ubuntu
Would you like to continue the upgrade using default sources? If you
select 'No', the upgrade will be aborted.
Continue [yN] y
- Traceback (most recent call last):
- File "/tmp/ubuntu-release-upgrader-7d18weqn/resolute", line 8, in <module>
- sys.exit(main())
- ^^^^^^
- File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeMain.py", line 235, in main
- if app.run():
- ^^^^^^^^^
- File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 2014, in run
- return self.fullUpgrade()
- ^^^^^^^^^^^^^^^^^^
- File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1876, in fullUpgrade
- if not self.updateDeb822Sources():
- ^^^^^^^^^^^^^^^^^^^^^^^^^^
- File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1061, in updateDeb822Sources
- if not self.rewriteDeb822Sources():
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^
- File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1048, in rewriteDeb822Sources
- self._addDefaultSources()
- File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 805, in _addDefaultSources
- e.suites = sorted([self.toDist, self.toDist + '-updates'],
- ^^^^^^^^
- AttributeError: property 'suites' of 'ExplodedDeb822SourceEntry' object has no setter
+ 0% [Working]
+ 0% [Working]
+ 0% [Connecting to archive.ubuntu.com]
+ 0% [Connecting to archive.ubuntu.com]
+ 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connected to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connected to archive.ubuntu.com (172.66.152.176)]
+ 0% [Waiting for headers] [Connecting to security.ubuntu.com]
+ 0% [Waiting for headers] [Connecting to security.ubuntu.com]
+ 0% [Waiting for headers] [Connecting to security.ubuntu.com (104.20.28.246)]
+ 0% [Waiting for headers] [Connecting to security.ubuntu.com (104.20.28.246)]
+ 0% [Waiting for headers] [Connected to security.ubuntu.com (104.20.28.246)]
+ 0% [Waiting for headers] [Connected to security.ubuntu.com (104.20.28.246)]
+ 0% [Waiting for headers] [Waiting for headers]
+ 0% [Waiting for headers] [Waiting for headers]
+ Get:1 http://security.ubuntu.com/ubuntu resolute-security InRelease [136 kB]
- *** Send problem report to the developers?
+ 10% [Waiting for headers] [1 InRelease 14.1 kB/136 kB 10%]
+ 10% [Waiting for headers] [1 InRelease 14.1 kB/136 kB 10%]
+ Get:2 http://archive.ubuntu.com/ubuntu resolute InRelease [136 kB]
- After the problem report has been sent, please fill out the form in the
- automatically opened web browser.
+ 12% [2 InRelease 14.1 kB/136 kB 10%] [1 InRelease 18.5 kB/136 kB 13%]
+ 12% [2 InRelease 14.1 kB/136 kB 10%] [1 InRelease 18.5 kB/136 kB 13%]
+ 75% [2 InRelease 69.1 kB/136 kB 51%]
+ 75% [2 InRelease 69.1 kB/136 kB 51%]
+ 75% [2 InRelease 69.1 kB/136 kB 51%]
+ 75% [2 InRelease 69.1 kB/136 kB 51%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%] [Waiting for headers]
+ 60% [2 InRelease 85.1 kB/136 kB 62%] [Waiting for headers]
+ Get:3 http://security.ubuntu.com/ubuntu resolute-security/main amd64 Packages [23.0 kB]
- What would you like to do? Your options are:
- S: Send report (39.4 KB)
- V: View report
- K: Keep report file for sending later or copying to somewhere else
- I: Cancel and ignore future crashes of this program version
- C: Cancel
- Please choose (S/V/K/I/C): c
-
-
- === Command terminated with exit status 1 (Wed May 6 15:45:29 2026) ===
+ 69% [2 InRelease 93.8 kB/136 kB 69%] [3 Packages 23.0 kB/23.0 kB 100%]
+ 69% [2 InRelease 93.8 kB/136 kB 69%] [3 Packages 23.0 kB/23.0 kB 100%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%] [Waiting for headers]
+ 70% [2 InRelease 96.7 kB/136 kB 71%] [Waiting for headers]
+ Get:4 http://security.ubuntu.com/ubuntu resolute-security/main Translation-en [12.6 kB]
** Description changed:
If the upgrader fails its url_downloadable check from
http://archive.ubuntu.com (while apt update succeeds), it will prompt
for the default sources to be restored. If yes is selected, an
AttributeError will be raised as the _addDefaultSources() function
attempts to set a property (suites) without a setter.
- In this case the url_downloadable fails since it receives "403:
+ In this case the url_downloadable check fails since it receives "403:
Forbidden".
Interestingly this error does not occur if the apt update fails.
## Example 1 (apt update succeeds):
...
Hit http://archive.ubuntu.com/ubuntu noble InRelease
Hit http://security.ubuntu.com/ubuntu noble-security InRelease
Hit http://archive.ubuntu.com/ubuntu noble-updates InRelease
Hit http://archive.ubuntu.com/ubuntu noble-backports InRelease
Fetched 0 B in 0s (0 B/s)
...
Updating repository information
Required apt sources are missing
This is probably because one or more of the following mirrors are
out-of-date or unreachable:
http://archive.ubuntu.com/ubuntu
Would you like to continue the upgrade using default sources? If you
select 'No', the upgrade will be aborted.
Continue [yN] y
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-7d18weqn/resolute", line 8, in <module>
sys.exit(main())
^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeMain.py", line 235, in main
if app.run():
^^^^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 2014, in run
return self.fullUpgrade()
^^^^^^^^^^^^^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1876, in fullUpgrade
if not self.updateDeb822Sources():
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1061, in updateDeb822Sources
if not self.rewriteDeb822Sources():
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1048, in rewriteDeb822Sources
self._addDefaultSources()
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 805, in _addDefaultSources
e.suites = sorted([self.toDist, self.toDist + '-updates'],
^^^^^^^^
AttributeError: property 'suites' of 'ExplodedDeb822SourceEntry' object has no setter
## Example 2 (apt update fails/non-default source is used)
...
-
- Could not resolve 'refridgerator.ubuntu.com'
-
- Err http://refridgerator.ubuntu.com/ubuntu noble-updates InRelease
- Could not resolve 'refridgerator.ubuntu.com'
-
- Err http://refridgerator.ubuntu.com/ubuntu noble-backports InRelease
+ Could not resolve 'refridgerator.ubuntu.com'
- Could not resolve 'refridgerator.ubuntu.com'
-
- Err http://refridgerator.ubuntu.com/ubuntu noble-security InRelease
+ Err http://refridgerator.ubuntu.com/ubuntu noble-updates InRelease
- Could not resolve 'refridgerator.ubuntu.com'
+ Could not resolve 'refridgerator.ubuntu.com'
+
+ Err http://refridgerator.ubuntu.com/ubuntu noble-backports InRelease
+
+ Could not resolve 'refridgerator.ubuntu.com'
+
+ Err http://refridgerator.ubuntu.com/ubuntu noble-security InRelease
+
+ Could not resolve 'refridgerator.ubuntu.com'
...
Updating repository information
Required apt sources are missing
- This is probably because of one or more of the following unsupported
- mirrors was disabled:
+ This is probably because of one or more of the following unsupported
+ mirrors was disabled:
- http://refridgerator.ubuntu.com/ubuntu
- http://refridgerator.ubuntu.com/ubuntu
+ http://refridgerator.ubuntu.com/ubuntu
+ http://refridgerator.ubuntu.com/ubuntu
- Would you like to continue the upgrade using default sources? If you
- select 'No', the upgrade will be aborted.
+ Would you like to continue the upgrade using default sources? If you
+ select 'No', the upgrade will be aborted.
Continue [yN] y
- 0% [Working]
- 0% [Working]
- 0% [Connecting to archive.ubuntu.com]
- 0% [Connecting to archive.ubuntu.com]
- 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
- 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
- 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
- 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
- 0% [Connected to archive.ubuntu.com (172.66.152.176)]
- 0% [Connected to archive.ubuntu.com (172.66.152.176)]
- 0% [Waiting for headers] [Connecting to security.ubuntu.com]
- 0% [Waiting for headers] [Connecting to security.ubuntu.com]
- 0% [Waiting for headers] [Connecting to security.ubuntu.com (104.20.28.246)]
- 0% [Waiting for headers] [Connecting to security.ubuntu.com (104.20.28.246)]
- 0% [Waiting for headers] [Connected to security.ubuntu.com (104.20.28.246)]
- 0% [Waiting for headers] [Connected to security.ubuntu.com (104.20.28.246)]
- 0% [Waiting for headers] [Waiting for headers]
- 0% [Waiting for headers] [Waiting for headers]
- Get:1 http://security.ubuntu.com/ubuntu resolute-security InRelease [136 kB]
+ 0% [Working]
+ 0% [Working]
+ 0% [Connecting to archive.ubuntu.com]
+ 0% [Connecting to archive.ubuntu.com]
+ 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connecting to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connected to archive.ubuntu.com (172.66.152.176)]
+ 0% [Connected to archive.ubuntu.com (172.66.152.176)]
+ 0% [Waiting for headers] [Connecting to security.ubuntu.com]
+ 0% [Waiting for headers] [Connecting to security.ubuntu.com]
+ 0% [Waiting for headers] [Connecting to security.ubuntu.com (104.20.28.246)]
+ 0% [Waiting for headers] [Connecting to security.ubuntu.com (104.20.28.246)]
+ 0% [Waiting for headers] [Connected to security.ubuntu.com (104.20.28.246)]
+ 0% [Waiting for headers] [Connected to security.ubuntu.com (104.20.28.246)]
+ 0% [Waiting for headers] [Waiting for headers]
+ 0% [Waiting for headers] [Waiting for headers]
+ Get:1 http://security.ubuntu.com/ubuntu resolute-security InRelease [136 kB]
- 10% [Waiting for headers] [1 InRelease 14.1 kB/136 kB 10%]
- 10% [Waiting for headers] [1 InRelease 14.1 kB/136 kB 10%]
- Get:2 http://archive.ubuntu.com/ubuntu resolute InRelease [136 kB]
+ 10% [Waiting for headers] [1 InRelease 14.1 kB/136 kB 10%]
+ 10% [Waiting for headers] [1 InRelease 14.1 kB/136 kB 10%]
+ Get:2 http://archive.ubuntu.com/ubuntu resolute InRelease [136 kB]
- 12% [2 InRelease 14.1 kB/136 kB 10%] [1 InRelease 18.5 kB/136 kB 13%]
- 12% [2 InRelease 14.1 kB/136 kB 10%] [1 InRelease 18.5 kB/136 kB 13%]
- 75% [2 InRelease 69.1 kB/136 kB 51%]
- 75% [2 InRelease 69.1 kB/136 kB 51%]
- 75% [2 InRelease 69.1 kB/136 kB 51%]
- 75% [2 InRelease 69.1 kB/136 kB 51%]
- 60% [2 InRelease 85.1 kB/136 kB 62%]
- 60% [2 InRelease 85.1 kB/136 kB 62%]
- 60% [2 InRelease 85.1 kB/136 kB 62%]
- 60% [2 InRelease 85.1 kB/136 kB 62%]
- 60% [2 InRelease 85.1 kB/136 kB 62%] [Waiting for headers]
- 60% [2 InRelease 85.1 kB/136 kB 62%] [Waiting for headers]
+ 12% [2 InRelease 14.1 kB/136 kB 10%] [1 InRelease 18.5 kB/136 kB 13%]
+ 12% [2 InRelease 14.1 kB/136 kB 10%] [1 InRelease 18.5 kB/136 kB 13%]
+ 75% [2 InRelease 69.1 kB/136 kB 51%]
+ 75% [2 InRelease 69.1 kB/136 kB 51%]
+ 75% [2 InRelease 69.1 kB/136 kB 51%]
+ 75% [2 InRelease 69.1 kB/136 kB 51%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%]
+ 60% [2 InRelease 85.1 kB/136 kB 62%] [Waiting for headers]
+ 60% [2 InRelease 85.1 kB/136 kB 62%] [Waiting for headers]
Get:3 http://security.ubuntu.com/ubuntu resolute-security/main amd64 Packages [23.0 kB]
- 69% [2 InRelease 93.8 kB/136 kB 69%] [3 Packages 23.0 kB/23.0 kB 100%]
- 69% [2 InRelease 93.8 kB/136 kB 69%] [3 Packages 23.0 kB/23.0 kB 100%]
- 70% [2 InRelease 96.7 kB/136 kB 71%]
- 70% [2 InRelease 96.7 kB/136 kB 71%]
- 70% [2 InRelease 96.7 kB/136 kB 71%]
- 70% [2 InRelease 96.7 kB/136 kB 71%]
- 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
- 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
- 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
- 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
- 70% [2 InRelease 96.7 kB/136 kB 71%] [Waiting for headers]
- 70% [2 InRelease 96.7 kB/136 kB 71%] [Waiting for headers]
+ 69% [2 InRelease 93.8 kB/136 kB 69%] [3 Packages 23.0 kB/23.0 kB 100%]
+ 69% [2 InRelease 93.8 kB/136 kB 69%] [3 Packages 23.0 kB/23.0 kB 100%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
+ 70% [2 InRelease 96.7 kB/136 kB 71%] [Waiting for headers]
+ 70% [2 InRelease 96.7 kB/136 kB 71%] [Waiting for headers]
Get:4 http://security.ubuntu.com/ubuntu resolute-security/main Translation-en [12.6 kB]
--
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-release-upgrader in
Ubuntu.
https://bugs.launchpad.net/bugs/2151640
Title:
Falling back to default sources raises AttributeError if
archive.ubuntu.com is unreachable
Status in ubuntu-release-upgrader package in Ubuntu:
New
Bug description:
If the upgrader fails its url_downloadable check from
http://archive.ubuntu.com (while apt update succeeds), it will prompt
for the default sources to be restored. If yes is selected, an
AttributeError will be raised as the _addDefaultSources() function
attempts to set a property (suites) without a setter.
In this case the url_downloadable check fails since it receives "403:
Forbidden".
Interestingly this error does not occur if the apt update fails.
## Example 1 (apt update succeeds):
...
Hit http://archive.ubuntu.com/ubuntu noble InRelease
Hit http://security.ubuntu.com/ubuntu noble-security InRelease
Hit http://archive.ubuntu.com/ubuntu noble-updates InRelease
Hit http://archive.ubuntu.com/ubuntu noble-backports InRelease
Fetched 0 B in 0s (0 B/s)
...
Updating repository information
Required apt sources are missing
This is probably because one or more of the following mirrors are
out-of-date or unreachable:
http://archive.ubuntu.com/ubuntu
Would you like to continue the upgrade using default sources? If you
select 'No', the upgrade will be aborted.
Continue [yN] y
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-7d18weqn/resolute", line 8, in <module>
sys.exit(main())
^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeMain.py", line 235, in main
if app.run():
^^^^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 2014, in run
return self.fullUpgrade()
^^^^^^^^^^^^^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1876, in fullUpgrade
if not self.updateDeb822Sources():
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1061, in updateDeb822Sources
if not self.rewriteDeb822Sources():
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 1048, in rewriteDeb822Sources
self._addDefaultSources()
File "/tmp/ubuntu-release-upgrader-7d18weqn/DistUpgrade/DistUpgradeController.py", line 805, in _addDefaultSources
e.suites = sorted([self.toDist, self.toDist + '-updates'],
^^^^^^^^
AttributeError: property 'suites' of 'ExplodedDeb822SourceEntry' object has no setter
## Example 2 (apt update fails/non-default source is used)
...
Could not resolve 'refridgerator.ubuntu.com'
Err http://refridgerator.ubuntu.com/ubuntu noble-updates InRelease
Could not resolve 'refridgerator.ubuntu.com'
Err http://refridgerator.ubuntu.com/ubuntu noble-backports InRelease
Could not resolve 'refridgerator.ubuntu.com'
Err http://refridgerator.ubuntu.com/ubuntu noble-security InRelease
Could not resolve 'refridgerator.ubuntu.com'
...
Updating repository information
Required apt sources are missing
This is probably because of one or more of the following unsupported
mirrors was disabled:
http://refridgerator.ubuntu.com/ubuntu
http://refridgerator.ubuntu.com/ubuntu
Would you like to continue the upgrade using default sources? If you
select 'No', the upgrade will be aborted.
Continue [yN] y
0% [Working]
0% [Working]
0% [Connecting to archive.ubuntu.com]
0% [Connecting to archive.ubuntu.com]
0% [Connecting to archive.ubuntu.com (172.66.152.176)]
0% [Connecting to archive.ubuntu.com (172.66.152.176)]
0% [Connecting to archive.ubuntu.com (172.66.152.176)]
0% [Connecting to archive.ubuntu.com (172.66.152.176)]
0% [Connected to archive.ubuntu.com (172.66.152.176)]
0% [Connected to archive.ubuntu.com (172.66.152.176)]
0% [Waiting for headers] [Connecting to security.ubuntu.com]
0% [Waiting for headers] [Connecting to security.ubuntu.com]
0% [Waiting for headers] [Connecting to security.ubuntu.com (104.20.28.246)]
0% [Waiting for headers] [Connecting to security.ubuntu.com (104.20.28.246)]
0% [Waiting for headers] [Connected to security.ubuntu.com (104.20.28.246)]
0% [Waiting for headers] [Connected to security.ubuntu.com (104.20.28.246)]
0% [Waiting for headers] [Waiting for headers]
0% [Waiting for headers] [Waiting for headers]
Get:1 http://security.ubuntu.com/ubuntu resolute-security InRelease [136 kB]
10% [Waiting for headers] [1 InRelease 14.1 kB/136 kB 10%]
10% [Waiting for headers] [1 InRelease 14.1 kB/136 kB 10%]
Get:2 http://archive.ubuntu.com/ubuntu resolute InRelease [136 kB]
12% [2 InRelease 14.1 kB/136 kB 10%] [1 InRelease 18.5 kB/136 kB 13%]
12% [2 InRelease 14.1 kB/136 kB 10%] [1 InRelease 18.5 kB/136 kB 13%]
75% [2 InRelease 69.1 kB/136 kB 51%]
75% [2 InRelease 69.1 kB/136 kB 51%]
75% [2 InRelease 69.1 kB/136 kB 51%]
75% [2 InRelease 69.1 kB/136 kB 51%]
60% [2 InRelease 85.1 kB/136 kB 62%]
60% [2 InRelease 85.1 kB/136 kB 62%]
60% [2 InRelease 85.1 kB/136 kB 62%]
60% [2 InRelease 85.1 kB/136 kB 62%]
60% [2 InRelease 85.1 kB/136 kB 62%] [Waiting for headers]
60% [2 InRelease 85.1 kB/136 kB 62%] [Waiting for headers]
Get:3 http://security.ubuntu.com/ubuntu resolute-security/main amd64 Packages [23.0 kB]
69% [2 InRelease 93.8 kB/136 kB 69%] [3 Packages 23.0 kB/23.0 kB 100%]
69% [2 InRelease 93.8 kB/136 kB 69%] [3 Packages 23.0 kB/23.0 kB 100%]
70% [2 InRelease 96.7 kB/136 kB 71%]
70% [2 InRelease 96.7 kB/136 kB 71%]
70% [2 InRelease 96.7 kB/136 kB 71%]
70% [2 InRelease 96.7 kB/136 kB 71%]
70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
70% [3 Packages store 0 B] [2 InRelease 96.7 kB/136 kB 71%]
70% [2 InRelease 96.7 kB/136 kB 71%] [Waiting for headers]
70% [2 InRelease 96.7 kB/136 kB 71%] [Waiting for headers]
Get:4 http://security.ubuntu.com/ubuntu resolute-security/main Translation-en [12.6 kB]
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