[ltp] Bug#565790: cat /proc/acpi/ibm/video and must press power button

[Yves-Alexis Perez]

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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
>=20
> (Don't) try this simple test:
> In an xdm (or some other window manager perhaps) window, do
> $ cat /proc/acpi/ibm/video
>=20
> 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.
>=20
> Notes: you have to run this experiment in xwindows. Doing it on tty1
> just prints a few lines of text.
>=20
> 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 out of date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

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Yves-Alexis

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