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 Ubuntu-X, 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 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/~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
