[Bug 666502] [NEW] System halts when entropy exhausted, continues when it receivews new entropy

[kschmitt]

Public bug reported:

The system halts when entropy is exhausted, then continues when it
receives more entropy.

This happens during boot, necessitating key-twiddling or mouse-jiggling
in order to boot.

Once the system is fully booted, if one pings it, pings work at first,
then halt when the entropy is exhausted.  When new entropy is provided
(mouse jiggle/key twiddle) they continue.

I'm checking entropy by looking in
/proc/sys/kernel/random/entropy_avail, and on this system it rarely
peeks 200, and us usually wavering around 100.  That's really low, but
it _should_not_matter_ if there is entropy or not for booting, normal
operation, or basic TCP/IP usage.


Note, I do not own this laptop, I was asked to fix it, and will return it to it's owner now, suggesting they install ubuntu 10.04 (which worked), or a different distro.  Hopefully there will be enough information in the bug report to track down why the system is using entropy all the time.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-22-generic 2.6.35-22.35
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  pcguru     1515 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf0440000 irq 46'
   Mixer name	: 'Realtek ALC272'
   Components	: 'HDA:10ec0272,1179ff6e,00100001'
   Controls      : 17
   Simple ctrls  : 10
Date: Mon Oct 25 15:33:16 2010
HibernationDevice: RESUME=UUID=70b13820-2fc4-47d5-babb-5dc71a8ff6eb
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: TOSHIBA TOSHIBA NB205
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=4716231a-7aea-4e58-80fb-97ee1710ed9b ro quiet splash
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
dmi.bios.date: 04/07/2009
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V1.20
dmi.board.name: KAVAA
dmi.board.vendor: TOSHIBA
dmi.board.version: 1.00
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV1.20:bd04/07/2009:svnTOSHIBA:pnTOSHIBANB205:pvrPLL25U-009018:rvnTOSHIBA:rnKAVAA:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: TOSHIBA NB205
dmi.product.version: PLL25U-009018
dmi.sys.vendor: TOSHIBA

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 maverick needs-upstream-testing regression-potential

-- 
System halts when entropy exhausted, continues when it receivews new entropy
https://bugs.launchpad.net/bugs/666502
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