I cannot reproduce Bug 417599 and I don't believe I've ever seen Bug 431812 happen.
I tried to reproduce my bug again and I could not recover this time with Fn-F7 (crt/lcd switch). I also could not recover through switching through ttys. I think the difference may be I switched to the xfce4 window manager. So I tried again with Gnome this time on a new user account (this one created after upgrading from jaunty to karmic). Results: Bug still occurs. Fn-F7 recovers the first time, though now the screen flashes for a second before showing the desktop. If I test it again during the same session, the screen will flash indefinitely, though I can still recover from this state by switching TTYs (ctrl-alt-F1, alt-F8). See below for a tail of my dmesg after the two flashing states described above. While writing this up after the above tests my system froze up (only the mouse moved, didn't check if I could ssh in). Not sure if this is related but I pasted xorg's log and the syslog, right before the freeze, below too. dmesg after black screen recovery: [ 876.164450] [drm] DAC-6: set mode 640x480 0 [ 876.270259] [drm] DAC-6: set mode 640x480 0 [ 876.339628] i2c-adapter i2c-1: unable to read EDID block. [ 876.339632] i915 0000:00:02.0: LVDS-1: no EDID data [ 876.381047] [drm] TV-12: set mode NTSC 480i 0 [ 876.521167] [drm] TV-12: set mode NTSC 480i 0 [ 876.977168] [drm] LVDS-8: set mode 19 // recovered gui here [ 898.210123] [drm] DAC-6: set mode 640x480 0 [ 898.315048] [drm] DAC-6: set mode 640x480 0 [ 898.384402] i2c-adapter i2c-1: unable to read EDID block. [ 898.384406] i915 0000:00:02.0: LVDS-1: no EDID data [ 898.425775] [drm] TV-12: set mode NTSC 480i 0 [ 898.565927] [drm] TV-12: set mode NTSC 480i 0 [ 901.593519] [drm] LVDS-8: set mode 1024x768 16 [ 905.916108] [drm] LVDS-8: set mode 1a // recovered gui here tail of Xorg.1.log after reboot after freeze: (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 TV1 (II) AIGLX: Suspending AIGLX clients for VT switch (II) UnloadModule: "synaptics" (II) TPPS/2 IBM TrackPoint: Close (II) UnloadModule: "evdev" (II) Macintosh mouse button emulation: Close (II) UnloadModule: "evdev" (II) ThinkPad Extra Buttons: Close (II) UnloadModule: "evdev" (II) Sleep Button: Close (II) UnloadModule: "evdev" (II) Video Bus: Close (II) UnloadModule: "evdev" (II) AT Translated Set 2 keyboard: Close (II) UnloadModule: "evdev" (II) Power Button: Close (II) UnloadModule: "evdev" ddxSigGiveUp: Closing log syslog before and after reboot: Oct 1 01:39:24 happybox kernel: [ 1532.205968] i2c-adapter i2c-1: unable to read EDID block. Oct 1 01:39:24 happybox kernel: [ 1532.205972] i915 0000:00:02.0: LVDS-1: no EDID data Oct 1 01:39:24 happybox kernel: [ 1532.247359] [drm] TV-12: set mode NTSC 480i 0 Oct 1 01:39:27 happybox kernel: [ 1532.387534] [drm] TV-12: set mode NTSC 480i 0 Oct 1 01:39:27 happybox kernel: [ 1534.594420] [drm] DAC-6: set mode 640x480 0 Oct 1 01:39:27 happybox kernel: [ 1534.702300] [drm] DAC-6: set mode 640x480 0 Oct 1 01:39:27 happybox kernel: [ 1534.773173] i2c-adapter i2c-1: unable to read EDID block. Oct 1 01:39:27 happybox kernel: [ 1534.773178] i915 0000:00:02.0: LVDS-1: no EDID data Oct 1 01:39:27 happybox kernel: [ 1534.814569] [drm] TV-12: set mode NTSC 480i 0 Oct 1 01:39:27 happybox kernel: [ 1534.954792] [drm] TV-12: set mode NTSC 480i 0 Oct 1 01:39:27 happybox kernel: [ 1535.309004] [drm] DAC-6: set mode 640x480 0 Oct 1 01:39:27 happybox kernel: [ 1535.414097] [drm] DAC-6: set mode 640x480 0 Oct 1 01:39:27 happybox kernel: [ 1535.483306] i2c-adapter i2c-1: unable to read EDID block. Oct 1 01:39:34 happybox acpid: client 3148[0:0] has disconnected Oct 1 01:39:34 happybox acpid: client connected from 3148[0:0] Oct 1 01:40:52 happybox wpa_supplicant[846]: CTRL-EVENT-SCAN-RESULTS Oct 1 01:42:52 happybox wpa_supplicant[846]: CTRL-EVENT-SCAN-RESULTS Oct 1 01:45:47 happybox kernel: imklog 4.2.0, log source = /var/run/rsyslog/kmsg started. Oct 1 01:45:47 happybox rsyslogd: [origin software="rsyslogd" swVersion="4.2.0" x-pid="747" x-info="http://www.rsyslog.com"] (re)start Oct 1 01:45:47 happybox rsyslogd: rsyslogd's groupid changed to 102 Oct 1 01:45:47 happybox rsyslogd: rsyslogd's userid changed to 101 Oct 1 01:45:47 happybox kernel: [ 0.000000] Initializing cgroup subsys cpuset Oct 1 01:45:47 happybox kernel: [ 0.000000] Initializing cgroup subsys cpu Oct 1 01:45:47 happybox kernel: [ 0.000000] Linux version 2.6.31-11-generic (bui...@rothera) (gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu3) ) #36-Ubuntu SMP Fri Sep 25 06:37:51 UTC 2009 (Ubuntu 2.6.31-11.36-generic) -- [i915gm] karmic 2.6.31-2 and -3 lid closing blacks screen until reboot on thinkpad r52 https://bugs.launchpad.net/bugs/399636 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