On mar., 2010-01-19 at 04:25 +0800, jidanni@jidanni.org wrote: > X-debbugs-Cc: ibm-acpi-devel@lists.sourceforge.net, > linux-thinkpad@linux-thinkpad.org > Package: linux-2.6 > Version: 2.6.32-5 > File: > /lib/modules/2.6.32-trunk-686/kernel/drivers/platform/x86/thinkpad_acp > i.ko > > (Don't) try this simple test: > In an xdm (or some other window manager perhaps) window, do > $ cat /proc/acpi/ibm/video > > Voila. The screen goes black, the keyboard becomes useless, and even > the > # (sleep 44; reboot) > job you had running on tty1 never completes. I.e., the system is > rendered inoperable. The only thing you can do at this point is hold > down the power button until vrrrr... it powers down. Then power back > up > and let it recover its ext3 journals etc. > > Notes: you have to run this experiment in xwindows. Doing it on tty1 > just prints a few lines of text. > > ThinkPad ACPI Extras v0.23 > ThinkPad BIOS 1WET88WW (2.08 ), EC 1VHT28WW-1.04 #which I'm warned is > out of date > IBM ThinkPad R50e, model 1834NV1 Linux hidalgo 2.6.32-trunk-amd64 #1 SMP Sun Jan 10 22:40:40 UTC 2010 GNU/Linux 23:29:28 up 2 days, 21:47, 5 users, load average: 0.44, 0.27, 0.14 corsac@hidalgo: cat /proc/acpi/ibm/video status: supported lcd: enabled crt: disabled dvi: disabled auto: disabled commands: lcd_enable, lcd_disable commands: crt_enable, crt_disable commands: dvi_enable, dvi_disable commands: auto_enable, auto_disable commands: video_switch, expand_toggle This on a T61 with intel graphics Product Name: 8897CTO BIOS Version: 7LETC6WW (2.26 ) Vendor: LENOVO -- Yves-Alexis
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