On Wed, Feb 20, 2013 at 02:18:25PM -0000, Tomas Vanderka wrote: > I don't think the patch from #31 will fix this because X is really > getting EACCESS (0xfffffff3) not EAGAIN as can be seen in #22
No it will; I don't check for EAGAIN specifically yet, but just a non-zero return. I want to make it check for specific error codes but want to see what actually is coming through when the patch's code gets hit. I agree that while the kernel guys say it should be EAGAIN, the data I've seen so far suggests a different error code (maybe EACCESS). > I also think this is probably an issue in plymouth because plymouth is > told to quit and release drm before X starts but it somehow does not > allways do this in time. Maybe there should be "plymouth --wait quit" > instead of "plymouth quit" in /etc/init/plymouth-stop.conf? I tried to > find how exactly "plymouth quit" is handled (especially if the plymouth > daemon really releases drm before that command returns) but I never got > to the answer. Well maybe, however we've seen people disable plymouth but still hit the race condition. My goal with this patch is to fix it on the X side so it'll work in the general case of anything holding the drm device too long. > You can try to change the X patch in #31 to spin also on EACCESS (bad > solution imho) or plymouth should be fixed to really release drm when > told to quit. > > And I also had this problem in Fedora, someone else reported it at > https://bugzilla.redhat.com/show_bug.cgi?id=855677 Thanks. > I reenabled plymouth-splash and will play a little with it again, but it > happens randomly in maybe 1/10 reboots so it's not easy to hit. Yeah, and it's possible there are several different failure modes depending on how the race is run, each needing a separate fix. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/982889 Title: X trying to start before plymouth has finished using the drm driver Status in “libdrm” package in Ubuntu: Triaged Status in “linux” package in Ubuntu: Confirmed Status in “xorg-server” package in Ubuntu: In Progress Bug description: X server fails to start the first time after boot, it works fine when I start it again. Looks like a race condition with intel drm initialization, i guess X tries to start faster than drm driver is initialized so it fails. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14 Uname: Linux 3.2.0-23-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu3 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Mon Apr 16 10:35:28 2012 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0102] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Micro-Star International Co., Ltd. Device [1462:7750] Advanced Micro Devices [AMD] nee ATI Barts XT [ATI Radeon HD 6800 Series] [1002:6738] (prog-if 00 [VGA controller]) Subsystem: Giga-byte Technology Device [1458:21fa] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301) MachineType: MSI MS-7750 ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-23-generic root=/dev/mapper/ssd-ubuntu--precise ro quiet splash SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/25/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V4.0 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z68A-G43 (G3) (MS-7750) dmi.board.vendor: MSI dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV4.0:bd08/25/2011:svnMSI:pnMS-7750:pvr1.0:rvnMSI:rnZ68A-G43(G3)(MS-7750):rvr1.0:cvnMSI:ct3:cvr1.0: dmi.product.name: MS-7750 dmi.product.version: 1.0 dmi.sys.vendor: MSI version.compiz: compiz 1:0.9.7.6-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.32-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/982889/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
