[Bug 574449] Re: random flickers on ubuntu lucid desktop
** Description changed: Ubuntu release: Ubuntu 10.04 LTS Edition: Desktop Architecture: i386 Expected behaviour: Steady desktop with no flickering during entire session. Actual behaviour: - On the platform mentioned above, I experience random flickers on the desktop. The flickering does not occur frequently (time interval of several minutes or sometimes hours between two consecutive occurrences). The flickering has not caused any problems till now apart from the visual interference and it occurs at any time, not just when any particular windowed application is running. I could not find any means of forcing a flicker to reproduce the problem manually and since a flicker lasts only for a fraction of a second and is random, I cannot get a screenshot. From what glimpses I have been able to catch on one or two occasions, the flickers actually appear to be highly distorted snapshots of parts of currently or previously open windows stretching across the whole desktop for a fraction of a second and a few pixels high. However, because of the instantaneous disappearance, I am not sure that they are actually ghosts of windows. Sometimes it is so quick that all I can see is a line or a bar. Also, because of the nature of the problem, I cannot determine its source. It might be xorg, kernel (maybe KMS), GNOME, Metacity, Compiz, Nautilus or something else altogether. My hardware and relevant software specifications are provided below. I am booting with KMS enabled. Notes: - 1. Searching the bug database, I only found bug #493707 somewhat similar but the two do not appear to be the same and there are no blue dots in my case. 2. I have come back to Ubuntu with GNOME after skipping version 9.10 so I do not know whether this problem exists in 9.10. 3. I have applied all updates that were available in lucid-security and lucid-updates in Software Sources, Updates. Computer: Dell Inspiron 1545 laptop CPU: Intel Core 2 Duo T6400 @ 2.0 GHz. RAM: 3 GB DDR2 Hard disk: 320 GB 5400 RPM SATA Graphics subsystem: Integrated Intel GM45 Graphics Kernel: 2.6.32-21-generic (32-bit) Video driver: intel Swap space: 4.5 GB Desktop environment: GNOME with Compiz enabled (System, Preferences, Appearance, Visual Effects: Normal) --- Architecture: i386 CurrentDmesg: [ 20.727072] ppdev: user-space parallel port driver [ 21.689126] sky2 eth0: Link is up at 100 Mbps, full duplex, flow control both [ 21.689324] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 31.756049] eth0: no IPv6 routers present DistroRelease: Ubuntu 10.04 DkmsStatus: bcmwl, 5.60.48.36+bdcom, 2.6.32-22-generic, i686: installed bcmwl, 5.60.48.36+bdcom, 2.6.32-21-generic, i686: installed InstallationMedia: Ubuntu 10.04 LTS Lucid Lynx - Release i386 (20100429) MachineType: Dell Inc. Inspiron 1545 NonfreeKernelModules: wl Package: xorg 1:7.5+5ubuntu1 PackageArchitecture: i386 ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=42eac28e-5846-43c5-aaf2-9737d30fe1ed ro quiet splash ProcEnviron: LANG=en_IN SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2 Tags: lucid lucid Uname: Linux 2.6.32-22-generic i686 UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare dmi.bios.date: 02/25/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: 0J037P dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA05:bd02/25/2009:svnDellInc.:pnInspiron1545:pvr:rvnDellInc.:rn0J037P:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Inspiron 1545 dmi.sys.vendor: Dell Inc. glxinfo: Error: [Errno 2] No such file or directory system: distro: Ubuntu codename: lucid architecture: i686 kernel: 2.6.32-22-generic + + + [lspci] + 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) + Subsystem: Dell Device [1028:02aa] -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/574449 Title: random flickers on ubuntu lucid desktop -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
I noticed this whenever I started a virtual machine inside of VMWare Player. I'm on a Toshiba Satellite A105-S2194 laptop with a 32-bit processor and 1.5G RAM (running Kubuntu 10.04 32-bit). I'm not entirely sure if the issue is the same, but I posted a video of it on YouTube at http://www.youtube.com/watch?v=ILfuQYkRZx4 and will be rebooting with the i1915.powersave=0 line in my GRUB file. Hopefully it will work. I should note that my video card is an ATI Radeon x200 Mobile. Thanks, and have a great day:) Patrick. -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
The issue appears on Acer 5738Z too and I confirm that doing the grub mod fixed it :) -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Ubuntu-x-swat] [Bug 574449] Re: random flickers on ubuntu lucid desktop
On Sat, May 29, 2010 at 06:02:56AM -, deibu76 wrote: Running 64-bit Ubuntu 10.04 on identical hardware as well. However, I've had the laptop hooked up to my TV now (via VGA cable) for several hours with mirror screens and haven't had the problem at all - the TV does not support 1366x768, so both screens are now set to 1360x768 instead. Nothing else has changed - compiz is still running. I also briefly tested dual monitor mode with the laptop display @ 1366x768/60Hz and TV @ 1360x768 - had browser terminal windows open on both, and did not notice any flickering. A quick search online showed a user with a Dell 1545 w/ Intel GM45 integrated gfx was having similar problems using Fedora 12's Intel xorg driver - http://bugzilla.redhat.com/show_bug.cgi?id=519734 . Several other distros showed up w/ similar problems with laptops w/ Intel GM45 GPUs. They also seem to confirm adding i915powersave=0 to the cmd line in Grub seemed to solve the problem. Just as that command line configuration seems to work for a lot of people, I wonder if adding the 2nd display stops the flickering for me because it causes power-saving mode for the GPU to be disabled? I have no idea. Don't recall whether or not I had the problem with Karmic - I bought the laptop in January installed 9.10 but I upgraded to Lucid Alpha 3 in February. The flickering hasn't been frequent enough to become much of a distraction for me. No problem doing anything graphics-intensive - I can play videos online w/ 64-bit Flash Alpha I can even watch Netflix movies in a full-screen WinXP box w/ VMWare Player. I can even rotate compiz cylinder while its running and see the video playing behind my other desktops. The flickering definitely seems to have something to do with the power mgmt. modes on the GPU. In fact, I seem to notice flickering MOST significantly when using a terminal window (terminal w/ ambiance theme w/ transparency, if that helps any). Yesterday, I had to run e2fsck so I put in a Linux Mint 9 live CD (which I assume uses the same Intel drivers?) opened a terminal and the same problem occurred. I'll try turning powersave off for a few days and see how it works and what kind of impact that has on the battery life temperature. Not a significant problem for me though, but anything I can do to help w/ testing, let me know. This is my first posting on here so sorry if I missed some of the board rules! Dave Thanks for the help Dave, yeah and logically it makes sense that the power management is causing the flickering, will look more into the bug report upstream,and will try to document that as soon as possible :) -- Regards, Vikram Dhillon -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
Running 64-bit Ubuntu 10.04 on identical hardware as well. However, I've had the laptop hooked up to my TV now (via VGA cable) for several hours with mirror screens and haven't had the problem at all - the TV does not support 1366x768, so both screens are now set to 1360x768 instead. Nothing else has changed - compiz is still running. I also briefly tested dual monitor mode with the laptop display @ 1366x768/60Hz and TV @ 1360x768 - had browser terminal windows open on both, and did not notice any flickering. A quick search online showed a user with a Dell 1545 w/ Intel GM45 integrated gfx was having similar problems using Fedora 12's Intel xorg driver - http://bugzilla.redhat.com/show_bug.cgi?id=519734 . Several other distros showed up w/ similar problems with laptops w/ Intel GM45 GPUs. They also seem to confirm adding i915powersave=0 to the cmd line in Grub seemed to solve the problem. Just as that command line configuration seems to work for a lot of people, I wonder if adding the 2nd display stops the flickering for me because it causes power-saving mode for the GPU to be disabled? I have no idea. Don't recall whether or not I had the problem with Karmic - I bought the laptop in January installed 9.10 but I upgraded to Lucid Alpha 3 in February. The flickering hasn't been frequent enough to become much of a distraction for me. No problem doing anything graphics-intensive - I can play videos online w/ 64-bit Flash Alpha I can even watch Netflix movies in a full-screen WinXP box w/ VMWare Player. I can even rotate compiz cylinder while its running and see the video playing behind my other desktops. The flickering definitely seems to have something to do with the power mgmt. modes on the GPU. In fact, I seem to notice flickering MOST significantly when using a terminal window (terminal w/ ambiance theme w/ transparency, if that helps any). Yesterday, I had to run e2fsck so I put in a Linux Mint 9 live CD (which I assume uses the same Intel drivers?) opened a terminal and the same problem occurred. I'll try turning powersave off for a few days and see how it works and what kind of impact that has on the battery life temperature. Not a significant problem for me though, but anything I can do to help w/ testing, let me know. This is my first posting on here so sorry if I missed some of the board rules! Dave ** Bug watch added: Red Hat Bugzilla #519734 https://bugzilla.redhat.com/show_bug.cgi?id=519734 -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
The workaround mentioned in comments no. 20 and 21 seems to be working for me. There has been no flickering in the last four days. Saurav -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
Thanks for the link, Shanmuhanathan T! The YouTube video for the link provided by Shanmuhanathan T seems to demonstrate the problem at hand. A direct link to the video is http://www.youtube.com/watch?v=sSPS7y6MCXc. Because of the nature of the problem, you need to very carefully observe the lower portion of the screen shown in the video - the area around the blue comment header line - while the clip is playing to see the flicker. I am now trying out the workaround mentioned in Shanmuhanathan T's link, i.e., adding i915.powersave=0 to GRUB_CMDLINE_LINUX in /etc/default/grub and then sudo update-grub. Of course, I will need a few days to observe the effect and even then I will only be able to check whether the flickers still occur in that time period. It will not be possible to say that the flickers are gone for good because they don't occur with any regularity anyway. I will report back with my findings. Saurav -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
I can also confirm the same problem. Is there any additional information required from me. Mine is an acer aspire 5738z laptop with the intel GMA4500 HD graphics card. Additionally, found this comment on youtube for this problem, I have not tried the solution yet yet: http://www.youtube.com/comment_servlet?all_commentsv=sSPS7y6MCXc ** Changed in: xserver-xorg-video-intel (Ubuntu) Status: Incomplete = Confirmed -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
** Tags added: lucid -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
** Tags added: flicker -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
apport information ** Tags added: apport-collected ** Description changed: Ubuntu release: Ubuntu 10.04 LTS Edition: Desktop Architecture: i386 Expected behaviour: Steady desktop with no flickering during entire session. Actual behaviour: - On the platform mentioned above, I experience random flickers on the desktop. The flickering does not occur frequently (time interval of several minutes or sometimes hours between two consecutive occurrences). The flickering has not caused any problems till now apart from the visual interference and it occurs at any time, not just when any particular windowed application is running. I could not find any means of forcing a flicker to reproduce the problem manually and since a flicker lasts only for a fraction of a second and is random, I cannot get a screenshot. From what glimpses I have been able to catch on one or two occasions, the flickers actually appear to be highly distorted snapshots of parts of currently or previously open windows stretching across the whole desktop for a fraction of a second and a few pixels high. However, because of the instantaneous disappearance, I am not sure that they are actually ghosts of windows. Sometimes it is so quick that all I can see is a line or a bar. Also, because of the nature of the problem, I cannot determine its source. It might be xorg, kernel (maybe KMS), GNOME, Metacity, Compiz, Nautilus or something else altogether. My hardware and relevant software specifications are provided below. I am booting with KMS enabled. Notes: - 1. Searching the bug database, I only found bug #493707 somewhat similar but the two do not appear to be the same and there are no blue dots in my case. 2. I have come back to Ubuntu with GNOME after skipping version 9.10 so I do not know whether this problem exists in 9.10. 3. I have applied all updates that were available in lucid-security and lucid-updates in Software Sources, Updates. Computer: Dell Inspiron 1545 laptop CPU: Intel Core 2 Duo T6400 @ 2.0 GHz. RAM: 3 GB DDR2 Hard disk: 320 GB 5400 RPM SATA Graphics subsystem: Integrated Intel GM45 Graphics Kernel: 2.6.32-21-generic (32-bit) Video driver: intel Swap space: 4.5 GB Desktop environment: GNOME with Compiz enabled (System, Preferences, Appearance, Visual Effects: Normal) + --- + Architecture: i386 + CurrentDmesg: + [ 20.727072] ppdev: user-space parallel port driver + [ 21.689126] sky2 eth0: Link is up at 100 Mbps, full duplex, flow control both + [ 21.689324] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready + [ 31.756049] eth0: no IPv6 routers present + DistroRelease: Ubuntu 10.04 + DkmsStatus: + bcmwl, 5.60.48.36+bdcom, 2.6.32-22-generic, i686: installed + bcmwl, 5.60.48.36+bdcom, 2.6.32-21-generic, i686: installed + InstallationMedia: Ubuntu 10.04 LTS Lucid Lynx - Release i386 (20100429) + MachineType: Dell Inc. Inspiron 1545 + NonfreeKernelModules: wl + Package: xorg 1:7.5+5ubuntu1 + PackageArchitecture: i386 + ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=42eac28e-5846-43c5-aaf2-9737d30fe1ed ro quiet splash + ProcEnviron: + LANG=en_IN + SHELL=/bin/bash + ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2 + Tags: lucid lucid + Uname: Linux 2.6.32-22-generic i686 + UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare + dmi.bios.date: 02/25/2009 + dmi.bios.vendor: Dell Inc. + dmi.bios.version: A05 + dmi.board.name: 0J037P + dmi.board.vendor: Dell Inc. + dmi.chassis.type: 8 + dmi.chassis.vendor: Dell Inc. + dmi.modalias: dmi:bvnDellInc.:bvrA05:bd02/25/2009:svnDellInc.:pnInspiron1545:pvr:rvnDellInc.:rn0J037P:rvr:cvnDellInc.:ct8:cvr: + dmi.product.name: Inspiron 1545 + dmi.sys.vendor: Dell Inc. + glxinfo: Error: [Errno 2] No such file or directory + system: + distro: Ubuntu + codename: lucid + architecture: i686 + kernel: 2.6.32-22-generic ** Attachment added: BootDmesg.txt http://launchpadlibrarian.net/48256367/BootDmesg.txt -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
** Package changed: xorg (Ubuntu) = xserver-xorg-video-intel (Ubuntu) -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
** Package changed: ubuntu = xorg (Ubuntu) -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
Hi Saurav, Please run the command 'apport-collect BUGNUMBER', which will attach several files we need for debugging. [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.] ** Tags added: needs-xorglog ** Tags added: needs-lspci-vvnn ** Changed in: xorg (Ubuntu) Status: New = Incomplete -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 574449] Re: random flickers on ubuntu lucid desktop
I can confirm that I am seeing the same effect on identical hardware. The problem did not exist in karmic (9.10). I have installed the 64 bit version of Lucid. Keith Weddell -- random flickers on ubuntu lucid desktop https://bugs.launchpad.net/bugs/574449 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
