The suggested fix does not work for me. As you can see, the file /sys/module/drm_kms_helper/parameters/poll
contains the correct value: root@desktop:~# cat /sys/module/drm_kms_helper/parameters/poll N Also, I've had: "tail -f /var/log/Xorg.0.log" running in the background while I attempt to resolve this issue, and I've noticed that the lag happens exactly when Xorg.0.log is flooded with the following messages: [ 2256.623] (II) NOUVEAU(0): EDID vendor "SAM", prod id 1315 [ 2256.623] (II) NOUVEAU(0): Using hsync ranges from config file [ 2256.623] (II) NOUVEAU(0): Using vrefresh ranges from config file [ 2256.623] (II) NOUVEAU(0): Printing DDC gathered Modelines: [ 2256.623] (II) NOUVEAU(0): Modeline "1920x1080"x0.0 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync (67.5 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "800x600"x0.0 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "640x480"x0.0 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "1280x800"x0.0 83.50 1280 1352 1480 1680 800 803 809 831 -hsync +vsync (49.7 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "1280x960"x0.0 108.00 1280 1376 1488 1800 960 961 964 1000 +hsync +vsync (60.0 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "1280x1024"x0.0 108.00 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync (64.0 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "1440x900"x0.0 106.50 1440 1520 1672 1904 900 903 909 934 -hsync +vsync (55.9 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "1600x1200"x0.0 162.00 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync (75.0 kHz) [ 2256.623] (II) NOUVEAU(0): Modeline "1680x1050"x0.0 146.25 1680 1784 1960 2240 1050 1053 1059 1089 -hsync +vsync (65.3 kHz) The two happen at the same time, every time. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/926714 Title: continuous jerky mouse movements while using nouveau driver in 12.04 Status in “xserver-xorg-video-nouveau” package in Ubuntu: Fix Released Bug description: This first time I started using the nouveau driver was in 12.04. So I would not be able to say if this worked in other Ubuntu versions. When moving around the screen at random times the mouse movements are very jerky. ou would move i a direction then it suddenly gets stuck for a microsecond breaking workflow. This happens while dragging items or just moving about the desktop. When I switch to the prop nvidia drivers this problem disappears, mouse movement is super smooth. I have also done some IRQ troubleshooting and it not that. Only happens with nouveau driver on this laptop (Dell XPS L701). I am not running 12.04 on any other PC's so I cannot say if this is device specific. I don't particularly want to use the prop drivers as I nvidia's multi monitor support is shocking and the new ubuntu support is WAY better. I constantly switch monitors so using nvidia is just not feasible. Thanks ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2 ProcVersionSignature: Ubuntu 3.2.0-12.21-generic 3.2.2 Uname: Linux 3.2.0-12-generic x86_64 .tmp.unity.scope.cities: Error: [Errno 21] Is a directory: '/tmp/unity-scope-cities' .tmp.unity.support.test.0: ApportVersion: 1.91-0ubuntu1 Architecture: amd64 CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell] CompositorRunning: compiz Date: Sat Feb 4 17:15:36 2012 DistUpgraded: Log time: 2011-12-21 10:30:51.848974 DistroCodename: precise DistroVariant: ubuntu EcryptfsInUse: Yes ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu GraphicsCard: NVIDIA Corporation GF106 [GeForce GT 445M] [10de:0dd2] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:046c] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1) MachineType: Dell Inc. XPS L701X ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-12-generic root=UUID=4d02337e-4d2f-46d2-8ff7-6bfd4cd1fb0a ro quiet splash vt.handoff=7 SourcePackage: xserver-xorg-video-nouveau UpgradeStatus: Upgraded to precise on 2011-12-21 (45 days ago) dmi.bios.date: 11/29/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: A06 dmi.board.vendor: Dell Inc. dmi.board.version: A06 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A06 dmi.modalias: dmi:bvnDellInc.:bvrA06:bd11/29/2010:svnDellInc.:pnXPSL701X:pvrA06:rvnDellInc.:rn:rvrA06:cvnDellInc.:ct8:cvrA06: dmi.product.name: XPS L701X dmi.product.version: A06 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu8 version.ia32-libs: ia32-libs 20090808ubuntu33 version.libdrm2: libdrm2 2.4.30-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.11.3-0ubuntu10 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901-1ubuntu3 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 2:2.17.0-1ubuntu3 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/xserver-xorg-video-nouveau/+bug/926714/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
