[Bug 579614] [NEW] Ubuntu Lucid 10.04 / Acer 5021WMLi / Screen flickers / nearly blank after resume from suspend (regression)

[Aerto]

Public bug reported:

Possible duplicates

492392 but this lists older kernel as fixed. 
510004 but display does not look like it is in console mode. 
For display see photograph 

http://ubuntuone.com/p/3S1/

of the display after resuming and after submitting of the password.
Before submitting the password the vertical lines were visible for too
short a time to take a picture (timing problem).

574848 but only occasionally the screen is totally blank. I did also
test the live cd of lucid and it resumed with blank screen from suspend.
No horizontal lines.

Steps to reproduce
1. Start computer
2. After booting to desktop select from top right menu suspend
3. After suspending press power button
4. Screen shows only occasional gray horizontal lines with max height of aproximatelly 1 in. 
5. Input password -> vertical lines will be drawn for a longer time, can fill the screen up to 2/3rd:s of the height. Also the lines will have more colors than gray. 

It should be noted that 9.10 had similar occasional issue. With 9.10 the
screen occasionally got garbled when switching user or after pressing
ctrl+alt+f(n). But with 9.10 suspend worked and the display normally
would revert back to normal after pressing ctrl+alt+f(n) a few times
with different (n)'s. Also the behaviour was notably different as can be
seen from photograph

http://ubuntuone.com/p/3SJ/

Also it should be noted that with lucid ctrl+alt+f(n) trick does not work and altGr + sysrq + k does not have any effect.
Also it should be noted that workaround of adding kernel command line option radeon.new_pll=0 as mentioned in bug 543045 does not have any effect.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-headers-2.6.32-22 2.6.32-22.33
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  acer5020   1370 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'IXP'/'ATI IXP rev 2 with ALC655 at 0xc0003400, irq 17'
   Mixer name	: 'Realtek ALC655 rev 0'
   Components	: 'AC97a:414c4760'
   Controls      : 41
   Simple ctrls  : 26
Card1.Amixer.info:
 Card hw:1 'Modem'/'ATI IXP Modem rev 2 at 0xc0003800, irq 17'
   Mixer name	: 'Conexant id 23'
   Components	: 'AC97m:43585423'
   Controls      : 2
   Simple ctrls  : 2
Card1.Codecs.codec97.0.mc97.1.1:
 1-1/0: Conexant id 23
 
 Extended modem ID: codec=1 LIN1
 Modem status     : PRA(GPIO) PRB(res) PRC(ADC1) PRD(DAC1) PRE(ADC2) PRF(DAC2) PRG(HADC) PRH(HDAC)
 Line1 rate       : 8000Hz
Date: Wed May 12 21:45:30 2010
HibernationDevice: RESUME=UUID=6dc233cb-ce38-4363-8a38-52167f1fac5a
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Lsusb:
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Acer Aspire 5020
PackageArchitecture: all
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=4b81d52f-44d1-40c9-881b-50665da138ec ro quiet splash
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
SourcePackage: linux
dmi.bios.date: 12/19/2005
dmi.bios.vendor: Phoenix
dmi.bios.version: V1.20
dmi.board.name: Aspire 5020
dmi.board.vendor: Acer
dmi.board.version: Rev.A
dmi.chassis.type: 10
dmi.chassis.vendor: N/A
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenix:bvrV1.20:bd12/19/2005:svnAcer:pnAspire5020:pvr-1:rvnAcer:rnAspire5020:rvrRev.A:cvnN/A:ct10:cvrN/A:
dmi.product.name: Aspire 5020
dmi.product.version: -1
dmi.sys.vendor: Acer

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


** Tags: apport-bug i386 lucid needs-upstream-testing regression-release resume suspend

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Ubuntu Lucid 10.04 / Acer 5021WMLi / Screen flickers / nearly blank after resume from suspend (regression)
https://bugs.launchpad.net/bugs/579614
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