[RS482] Kubuntu: Display flickers after suspend-to-ram

[Thomas David]

Binary package hint: xserver-xorg-video-ati

Distro: Kubuntu 9.04 Jaunty Beta (up to date)
Hardware:
* Acer Aspire 5100
* ATI Xpress 1100

After waking up the notebook from suspend-to-ram, the display flickers. Restarting X doesn't help. This problem doesn't occur when performing suspend-to-disk.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
Package: xserver-xorg-video-ati 1:6.12.1-0ubuntu1
ProcEnviron:
 LANGUAGE=
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcVersion: Linux version 2.6.28-11-generic (buildd@palmer) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #38-Ubuntu SMP Fri Mar 27 09:00:52 UTC 2009
SourcePackage: xserver-xorg-video-ati
Uname: Linux 2.6.28-11-generic i686

[lspci]
00:00.0 Host bridge [0600]: ATI Technologies Inc RS480 Host Bridge [1002:5950] (rev 10)
     Subsystem: Acer Incorporated [ALI] Device [1025:009f]
01:05.0 VGA compatible controller [0300]: ATI Technologies Inc RS482 [Radeon Xpress 200M] [1002:5975]
     Subsystem: Acer Incorporated [ALI] Device [1025:009f]

[Stuart Rossiter (monsieurrigsby)]

Looks like not just Kubuntu. Have identical problem on standard Gnome Ubuntu, same model (Acer Aspire 5100 with Radeon Xpress 200M). Occurred immediately following Intrepid upgrade.

[Stuart Rossiter (monsieurrigsby)]

Just to be clear: for me, it's not just a flicker but flickering with ghosted images of bits of desktop. Makes Ubuntu totally unusable. Still occurs if log off and back on with a safe terminal.

[Stuart Rossiter (monsieurrigsby)]

Sorry, late tonight :-( By Intrepid upgrade I, of course, mean upgrade *from* Intrepid (to Jaunty).

(sigh)

[foucault (aag)]

same problem here, only in kde not gnome, same if I close and repoen the display. the display literally shuts off until I move the mouse, then it turns back on untill I stop moving the mouse --at which point it turns back off.

restarting X does not help

ubuntu 9.04
acer aspire one

00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)

[Piotr Krysik (perper)]

It's not just Ubuntu 9.04 which has this bug. It's not only appears after suspend to ram but also after suspend to disk. This problem is with us for very long. I don't remember when it started, but it was probably in 7.04 or 7.10. The same bug is in Ubuntu 9.10. I think this is high time to solve this problem or push it to developers of the driver. I suppose that it will be hard to reproduce this problem on other machines so I can assist in tests. I know something about programming and debugging but I have zero knowledge about graphic drivers. I can follow instructions from someone experienced.
This is how screen exactly looks after suspend: http://www.youtube.com/watch?v=xuvfXgcQC94

[Marco_Case (casemarco)]

For anyone interested, I have found a solution for my Acer Aspire 5100 in UBUNTU 11.04 (64bit version)
The flashing screen is caused by the kernel modesetting feature (KMS) that doesn't work good on the ATI radeon xpress 1100 graphic chip, so I disabled this feature by editing the file "/etc/default/grub" and changing the line: GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash” to: GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash nomodeset”. Then I ran: sudo update-grub. Don't know if this is working for ubuntu versions below 11.04.

For the googlers around here's the sequence:

1) open the terminal and type: gksudo gedit/etc/default/grub
2) find a line that says: GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash”
3) modify that line this way: GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash nomodeset”
4) save, go back to terminal and type: sudo update-grub
5) reboot your laptop, then try to suspend it and resume, it should work.

Hope this helps someone.

[penalvch (penalvch)]

Thomas David, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xserver-xorg-video-ati REPLACE-WITH-BUG-NUMBER

Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Launchpad Janitor (janitor)]

[Expired for xserver-xorg-video-ati (Ubuntu) because there has been no activity for 60 days.]

[Aaron Sosnick (longlegged-guy)]

This bug is still present with the latest Ubuntu 14.04. For me nomodeset does not allow the screen to be set to its native resolution of 1280x800. Can we please reopen the bug?

[Aaron Sosnick (longlegged-guy)]

To be clear I am confirming presence with Ubuntu 14.04 but I assume it's an underlying problem and will be present in Kubuntu as well as every other variation.

[penalvch (penalvch)]

Aaron Sosnick, thank you for your comment. So your hardware and problem may be tracked, could you please file a new report with Ubuntu by executing the following in a terminal while booted into the default Ubuntu kernel (not a mainline one) via:
ubuntu-bug linux

For more on this, please read the official Ubuntu documentation:
Ubuntu Bug Control and Ubuntu Bug Squad: https://wiki.ubuntu.com/Bugs/BestPractices#X.2BAC8-Reporting.Focus_on_One_Issue
Ubuntu Kernel Team: https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Filing_Kernel_Bug_reports
Ubuntu Community: https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette

When opening up the new report, please feel free to subscribe me to it.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Launchpad Janitor (janitor)]

[Expired for xserver-xorg-video-ati (Ubuntu) because there has been no activity for 60 days.]