(In reply to comment #115) > Yes, it works. Thanks, it narrows it down. I looked through the Intel HW IOMMU code and haven't found anything obvious that could explain this.
OTOH, looking again at the dmesg with the crash (dmesg-3.10.0-rc6-00406-g73bc88c) I can't see the HW IOMMU being enabled. I'd expect "PCI-DMA: Intel(R) Virtualization Technology for Directed I/O". Instead I see SWIOTLB being enabled there. But if you are using SWIOTLB I don't understand why igfx_off makes any difference. Also the workaround in my patch should be already active for SWIOTLB, so that shouldn't make any difference either. Could you check if you had that workaround in your test kernel (1625e7e549 - "drm/i915: make compact dma scatter lists creation work with SWIOTLB backend")? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/946311 Title: only external screen is working with asus zenbook ux31e [eDP1] Status in X.org xf86-video-intel: Incomplete Status in “linux” package in Ubuntu: Fix Released Status in “xserver-xorg-video-intel” package in Ubuntu: Fix Released Bug description: This is regression after some recent (2-3 weeks) xorg? update. I also tested newest kernel v3.3.0-rc6 with no changes, so we can exclude kernel. This ultrabook is intensively used. So if you need some testing, i can do it only on weekends. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+10ubuntu1 Uname: Linux 3.3.0-rc6 x86_64 .tmp.unity.support.test.0: ApportVersion: 1.93-0ubuntu2 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,decor,compiztoolbox,grid,gnomecompat,imgpng,mousepoll,regex,place,vpswitch,move,animation,snap,resize,session,expo,wall,ezoom,fade,workarounds,scale,unityshell] CompositorRunning: compiz Date: Sun Mar 4 13:56:04 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 [8086:0116] (rev 09) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:1427] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120201.1) MachineType: ASUSTeK Computer Inc. UX31E ProcEnviron: TERM=xterm LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.3.0-rc6 root=UUID=ab2e9ae5-a032-44f5-b956-3223de09edff ro oops=panic panic=10 quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/20/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX31E.211 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX31E dmi.board.vendor: ASUSTeK Computer Inc. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX31E.211:bd01/20/2012:svnASUSTeKComputerInc.:pnUX31E:pvr1.0:rvnASUSTeKComputerInc.:rnUX31E:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0: dmi.product.name: UX31E dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu5 version.ia32-libs: ia32-libs 20090808ubuntu33 version.libdrm2: libdrm2 2.4.30-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.1-0ubuntu2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.1-0ubuntu2 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2 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/xserver-xorg-video-intel/+bug/946311/+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
