I've noticed that the graphics adapter resets itself to 85Hz refresh rate - which causes the screen corruption - rather spuriously: when connecting external monitors or coming back from sleep.
When the screen comes back from sleep, and the refresh rate is reset to 85Hz, I get this in Xorg.0.log: ---8<--- (II) intel(0): EDID for output VGA1 (II) intel(0): EDID for output LVDS1 (II) intel(0): Manufacturer: LEN Model: 4020 Serial#: 0 (II) intel(0): Year: 2007 Week: 35 (II) intel(0): EDID Version: 1.3 (II) intel(0): Digital Display Input (II) intel(0): Max Image Size [cm]: horiz.: 29 vert.: 21 (II) intel(0): Gamma: 2.20 (II) intel(0): DPMS capabilities: StandBy Suspend Off (II) intel(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 (II) intel(0): First detailed timing is preferred mode (II) intel(0): redX: 0.610 redY: 0.330 greenX: 0.300 greenY: 0.530 (II) intel(0): blueX: 0.150 blueY: 0.130 whiteX: 0.313 whiteY: 0.329 (II) intel(0): Manufacturer's mask: 0 (II) intel(0): Supported additional Video Mode: (II) intel(0): clock: 65.0 MHz Image Size: 287 x 215 mm (II) intel(0): h_active: 1024 h_sync: 1048 h_sync_end 1184 h_blank_end 1344 h_border: 0 (II) intel(0): v_active: 768 v_sync: 771 v_sync_end 777 v_blanking: 806 v_border: 0 (II) intel(0): Supported additional Video Mode: (II) intel(0): clock: 54.2 MHz Image Size: 287 x 215 mm (II) intel(0): h_active: 1024 h_sync: 1048 h_sync_end 1184 h_blank_end 1344 h_border: 0 (II) intel(0): v_active: 768 v_sync: 771 v_sync_end 777 v_blanking: 806 v_border: 0 (WW) intel(0): Unknown vendor-specific block f (II) intel(0): LTD141ECMB (II) intel(0): EDID (in hex): (II) intel(0): 00ffffffffffff0030ae204000000000 (II) intel(0): 23110103801d1578ea6f959c544c8726 (II) intel(0): 21505400000001010101010101010101 (II) intel(0): 01010101010164190040410026301888 (II) intel(0): 36001fd7100000182815004041002630 (II) intel(0): 188836001fd7100000180000000f0061 (II) intel(0): 43326143280f010030640053000000fe (II) intel(0): 004c544431343145434d420a202000e9 (II) intel(0): EDID vendor "LEN", prod id 16416 (II) intel(0): Printing DDC gathered Modelines: (II) intel(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz) (II) intel(0): Modeline "1024x768"x0.0 54.16 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (40.3 kHz) (II) intel(0): Not using default mode "1152x864" (exceeds panel dimensions) (II) intel(0): Not using default mode "1280x960" (exceeds panel dimensions) (II) intel(0): Not using default mode "1280x960" (exceeds panel dimensions) (II) intel(0): Not using default mode "1280x1024" (exceeds panel dimensions) (II) intel(0): Not using default mode "1280x1024" (exceeds panel dimensions) (II) intel(0): Not using default mode "1280x1024" (exceeds panel dimensions) (II) intel(0): Not using default mode "1600x1200" (exceeds panel dimensions) (II) intel(0): Not using default mode "1600x1200" (exceeds panel dimensions) (II) intel(0): Not using default mode "1600x1200" (exceeds panel dimensions) (II) intel(0): Not using default mode "1600x1200" (exceeds panel dimensions) (II) intel(0): Not using default mode "1600x1200" (exceeds panel dimensions) (II) intel(0): Not using default mode "1792x1344" (exceeds panel dimensions) (II) intel(0): Not using default mode "1792x1344" (exceeds panel dimensions) (II) intel(0): Not using default mode "1856x1392" (exceeds panel dimensions) (II) intel(0): Not using default mode "1856x1392" (exceeds panel dimensions) (II) intel(0): Not using default mode "1920x1440" (exceeds panel dimensions) (II) intel(0): Not using default mode "1920x1440" (exceeds panel dimensions) (II) intel(0): Not using default mode "1152x864" (exceeds panel dimensions) (II) intel(0): Not using default mode "1152x864" (exceeds panel dimensions) (II) intel(0): Not using default mode "1152x864" (exceeds panel dimensions) (II) intel(0): Not using default mode "1152x864" (exceeds panel dimensions) (II) intel(0): Not using default mode "1152x864" (exceeds panel dimensions) (II) intel(0): Not using default mode "1152x864" (exceeds panel dimensions) (II) intel(0): Not using default mode "1360x768" (monitor doesn't support reduced blanking) (II) intel(0): Not using default mode "1360x768" (exceeds panel dimensions) (II) intel(0): Not using default mode "1400x1050" (exceeds panel dimensions) (II) intel(0): Not using default mode "1400x1050" (exceeds panel dimensions) (II) intel(0): Not using default mode "1400x1050" (exceeds panel dimensions) (II) intel(0): Not using default mode "1400x1050" (exceeds panel dimensions) (II) intel(0): Not using default mode "1440x900" (exceeds panel dimensions) (II) intel(0): Not using default mode "1600x1024" (exceeds panel dimensions) (II) intel(0): Not using default mode "1680x1050" (monitor doesn't support reduced blanking) (II) intel(0): Not using default mode "1680x1050" (exceeds panel dimensions) (II) intel(0): Not using default mode "1680x1050" (exceeds panel dimensions) (II) intel(0): Not using default mode "1680x1050" (exceeds panel dimensions) (II) intel(0): Not using default mode "1680x1050" (exceeds panel dimensions) (II) intel(0): Not using default mode "1920x1080" (monitor doesn't support reduced blanking) (II) intel(0): Not using default mode "1920x1200" (monitor doesn't support reduced blanking) (II) intel(0): Not using default mode "1920x1440" (exceeds panel dimensions) (II) intel(0): Not using default mode "2048x1536" (exceeds panel dimensions) (II) intel(0): Not using default mode "2048x1536" (exceeds panel dimensions) (II) intel(0): Not using default mode "2048x1536" (exceeds panel dimensions) (II) intel(0): Printing probed modes for output LVDS1 (II) intel(0): Modeline "1024x768"x60.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz) (II) intel(0): Modeline "1024x768"x85.0 94.50 1024 1072 1168 1376 768 769 772 808 +hsync +vsync (68.7 kHz) (II) intel(0): Modeline "1024x768"x75.0 78.75 1024 1040 1136 1312 768 769 772 800 +hsync +vsync (60.0 kHz) (II) intel(0): Modeline "1024x768"x70.1 75.00 1024 1048 1184 1328 768 771 777 806 -hsync -vsync (56.5 kHz) (II) intel(0): Modeline "1024x768"x60.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz) (II) intel(0): Modeline "1024x768"x50.0 54.16 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (40.3 kHz) (II) intel(0): Modeline "832x624"x74.6 57.28 832 864 928 1152 624 625 628 667 -hsync -vsync (49.7 kHz) (II) intel(0): Modeline "800x600"x85.1 56.30 800 832 896 1048 600 601 604 631 +hsync +vsync (53.7 kHz) (II) intel(0): Modeline "800x600"x72.2 50.00 800 856 976 1040 600 637 643 666 +hsync +vsync (48.1 kHz) (II) intel(0): Modeline "800x600"x75.0 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync (46.9 kHz) (II) intel(0): Modeline "800x600"x60.3 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz) (II) intel(0): Modeline "800x600"x56.2 36.00 800 824 896 1024 600 601 603 625 +hsync +vsync (35.2 kHz) (II) intel(0): Modeline "640x480"x85.0 36.00 640 696 752 832 480 481 484 509 -hsync -vsync (43.3 kHz) (II) intel(0): Modeline "640x480"x72.8 31.50 640 664 704 832 480 489 492 520 -hsync -vsync (37.9 kHz) (II) intel(0): Modeline "640x480"x75.0 31.50 640 656 720 840 480 481 484 500 -hsync -vsync (37.5 kHz) (II) intel(0): Modeline "640x480"x59.9 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz) (II) intel(0): Modeline "720x400"x85.0 35.50 720 756 828 936 400 401 404 446 -hsync +vsync (37.9 kHz) (II) intel(0): Modeline "640x400"x85.1 31.50 640 672 736 832 400 401 404 445 -hsync +vsync (37.9 kHz) (II) intel(0): Modeline "640x350"x85.1 31.50 640 672 736 832 350 382 385 445 +hsync -vsync (37.9 kHz) (II) intel(0): EDID for output DVI1 ---8<--- -- after installing latest x-swat intel driver for Karmic, screen is sometimes corrupted https://bugs.launchpad.net/bugs/396171 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
