** Description changed: Binary package hint: xserver-xorg-video-intel On two computers of the model Dell Optiplex 760, Ultrasmall Form Factor the monitor shows some flickering kind of corruption when Xorg is started. Present when: - KMS is used, Monitor (Dell 20" 2007FP) connected via DVI-I cable to the DVI-I output of the computer and DVI-D input of the monitor Not present when: - UMS is used (i.e nomodeset boot option) - Monitor is connected using VGA (DVI-I to VGA adapter on computer, VGA input on monitor) - When booting a Lucid LiveUSB image (none of the not-present cases are thoroughly tested, so some of them may be coincidentally working when I tried it) Untested (so far): - Karmic LiveUSB image - With a different monitor Since the problem seems to be related to KMS I have tried the standard Karmic kernel, the mainline build [1] of 2.6.32 and the current Lucid kernel (2.6.32-7.10-generic) and they all show the problem. Problem description: - Most times (i.e. not always) when the computer is booted, some colors will have flickering blue dots at various places. It seems that some of the dots are always present while others flicker on and off. It seems that some colors are more susceptible than others, and that shows up as bands of corruption in gradients (see attached photo of Ubuntu login screen). The exact pattern is a little bit different from boot to boot, sometimes it is worse and sometimes better. On a normal single-color brown desktop there are flickering blue horizontal lines every now and then spanning the whole desktop. + Most times (i.e. not always) when the computer is booted, some colors will have flickering blue dots at various places. It seems that some of the dots are always present while others flicker on and off. It seems that some colors are more susceptible than others, and that shows up as bands of corruption in gradients (see attached photo of Ubuntu login screen). The exact pattern is a little bit different from boot to boot, sometimes it is worse and sometimes better. On a normal single-color brown desktop there are flickering blue horizontal lines every now and then spanning the whole desktop. Sometimes also the VTs and the usplash screen shows flickering blue dots on the black background. In order to get as much debug information as possible, I'm reporting this bug with `ubuntu-bug` running the Lucid kernel and the DRM KMS debug option drm.debug=0x04. [2] + + The corruption is only present in the native mode (0x40 1600x1200). If I + select any of the other modes available from xrandr, there is no + corruption. At least once the corruption has disappeared after switching + to another mode and back again. (`xrandr --output HDMI2 --mode 0x41` and + then `xandr --output HDMI2 --mode 0x40`). I can't reproduce this now (on + 2.6.32-7), so it may be kernel dependent. As a side note, the DVI connection is reported as HDMI2 even though it is a DVI, but that is probably a separate issue. I was considering not reporting this, since I will only have access to this hardware for about one more week. However, I opted for filing a bug report it so that it may solve as a model bug report for others having the same problem. [1]: http://kernel.ubuntu.com/~kernel-ppa/mainline/ [2]: http://lists.freedesktop.org/archives/intel-gfx/2009-July/003310.html ProblemType: Bug Architecture: i386 Date: Mon Dec 7 13:14:07 2009 DistroRelease: Ubuntu 9.10 InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5) MachineType: Dell Inc. OptiPlex 760 Package: xserver-xorg-video-intel 2:2.9.0-1ubuntu2 ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-7-generic root=UUID=6ca55718-1b9f-4ebb-b4b1-8175de7a008c ro quiet splash reboot=bios drm.debug=0x04 ProcEnviron: - LANG=en_US.UTF-8 - SHELL=/bin/bash + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.32-7.10-generic RelatedPackageVersions: - xserver-xorg 1:7.4+3ubuntu10 - libgl1-mesa-glx 7.6.0-1ubuntu4 - libdrm2 2.4.14-1ubuntu1 - xserver-xorg-video-intel 2:2.9.0-1ubuntu2 - xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1 + xserver-xorg 1:7.4+3ubuntu10 + libgl1-mesa-glx 7.6.0-1ubuntu4 + libdrm2 2.4.14-1ubuntu1 + xserver-xorg-video-intel 2:2.9.0-1ubuntu2 + xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1 SourcePackage: xserver-xorg-video-intel Uname: Linux 2.6.32-7-generic i686 XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf' XsessionErrors: - (gnome-settings-daemon:1777): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed - (gnome-settings-daemon:1777): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed - (polkit-gnome-authentication-agent-1:1816): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed - (nautilus:1808): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed + (gnome-settings-daemon:1777): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed + (gnome-settings-daemon:1777): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed + (polkit-gnome-authentication-agent-1:1816): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed + (nautilus:1808): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed dmi.bios.date: 08/17/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: 0G919G dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 16 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA05:bd08/17/2009:svnDellInc.:pnOptiPlex760:pvr:rvnDellInc.:rn0G919G:rvrA01:cvnDellInc.:ct16:cvr: dmi.product.name: OptiPlex 760 dmi.sys.vendor: Dell Inc. fglrx: Not loaded system: - distro: Ubuntu - architecture: i686kernel: 2.6.32-7-generic + distro: Ubuntu + architecture: i686kernel: 2.6.32-7-generic
-- [Q45] Flickering corruption with KMS and DVI output https://bugs.launchpad.net/bugs/493707 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
