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 out of date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

On Wed, 27 Jan 2010, jidanni@jidanni.org wrote:
> go reading /proc/acpi/ibm/video every day. But the curious user should
> have to resort to the power button if he steps on this landmine.

Sure. I limited it to CAP_SYS_ADMIN now, which usually means root.

The patch will be sent for merging, but I can't promise it will be merged
before the next merge window for 2.6.34, and only after that will it be
a cantidade for a 2.6.32.y stable.

Patch attached for reference.

--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh

On Mon, Feb 08, 2010 at 09:53:57PM -0200, Henrique de Moraes Holschuh wrote:
> On Wed, 27 Jan 2010, jidanni@jidanni.org wrote:
> > go reading /proc/acpi/ibm/video every day. But the curious user should
> > have to resort to the power button if he steps on this landmine.
>
> Sure. I limited it to CAP_SYS_ADMIN now, which usually means root.
>
> The patch will be sent for merging, but I can't promise it will be merged
> before the next merge window for 2.6.34, and only after that will it be
> a cantidade for a 2.6.32.y stable.
>
> Patch attached for reference.

Adding stable@kernel.org to CC. Please apply for 2.6.32.x :
This was merged in Linus' git as b525c06cdbd8a3963f0173ccd23f9147d4c384b5

For the bug history: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=565790

Cheers,
Moritz



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On Tue, 09 Mar 2010, Moritz Muehlenhoff wrote:
> On Mon, Feb 08, 2010 at 09:53:57PM -0200, Henrique de Moraes Holschuh wrote:
> > On Wed, 27 Jan 2010, jidanni@jidanni.org wrote:
> > > go reading /proc/acpi/ibm/video every day. But the curious user should
> > > have to resort to the power button if he steps on this landmine.
> >
> > Sure. I limited it to CAP_SYS_ADMIN now, which usually means root.
> >
> > The patch will be sent for merging, but I can't promise it will be merged
> > before the next merge window for 2.6.34, and only after that will it be
> > a cantidade for a 2.6.32.y stable.
> >
> > Patch attached for reference.
>
> Adding stable@kernel.org to CC. Please apply for 2.6.32.x :
> This was merged in Linus' git as b525c06cdbd8a3963f0173ccd23f9147d4c384b5

They should already have it somewhere in their queue, since I have Cc'd them
in the git commit message, which I understand is automatically parsed when
the commit gets merged in mainline.

--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh



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On Wed, Mar 10, 2010 at 05:29:42PM -0300, Henrique de Moraes Holschuh wrote:
> On Tue, 09 Mar 2010, Moritz Muehlenhoff wrote:
> > On Mon, Feb 08, 2010 at 09:53:57PM -0200, Henrique de Moraes Holschuh wrote:
> > > On Wed, 27 Jan 2010, jidanni@jidanni.org wrote:
> > > > go reading /proc/acpi/ibm/video every day. But the curious user should
> > > > have to resort to the power button if he steps on this landmine.
> > >
> > > Sure. I limited it to CAP_SYS_ADMIN now, which usually means root.
> > >
> > > The patch will be sent for merging, but I can't promise it will be merged
> > > before the next merge window for 2.6.34, and only after that will it be
> > > a cantidade for a 2.6.32.y stable.
> > >
> > > Patch attached for reference.
> >
> > Adding stable@kernel.org to CC. Please apply for 2.6.32.x :
> > This was merged in Linus' git as b525c06cdbd8a3963f0173ccd23f9147d4c384b5
>
> They should already have it somewhere in their queue, since I have Cc'd them
> in the git commit message, which I understand is automatically parsed when
> the commit gets merged in mainline.

Yes, I applied it to the .33.1 release. But it does not apply cleanly
to the .32 kernel. If you wish to see it there, please, can someone
provide me with a backported version?

thanks,

greg k-h



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On Thu, 18 Mar 2010, Greg KH wrote:
> On Wed, Mar 10, 2010 at 05:29:42PM -0300, Henrique de Moraes Holschuh wrote:
> > On Tue, 09 Mar 2010, Moritz Muehlenhoff wrote:
> > > On Mon, Feb 08, 2010 at 09:53:57PM -0200, Henrique de Moraes Holschuh wrote:
> > > > On Wed, 27 Jan 2010, jidanni@jidanni.org wrote:
> > > > > go reading /proc/acpi/ibm/video every day. But the curious user should
> > > > > have to resort to the power button if he steps on this landmine.
> > > >
> > > > Sure. I limited it to CAP_SYS_ADMIN now, which usually means root.
> > > >
> > > > The patch will be sent for merging, but I can't promise it will be merged
> > > > before the next merge window for 2.6.34, and only after that will it be
> > > > a cantidade for a 2.6.32.y stable.
> > > >
> > > > Patch attached for reference.
> > >
> > > Adding stable@kernel.org to CC. Please apply for 2.6.32.x :
> > > This was merged in Linus' git as b525c06cdbd8a3963f0173ccd23f9147d4c384b5
> >
> > They should already have it somewhere in their queue, since I have Cc'd them
> > in the git commit message, which I understand is automatically parsed when
> > the commit gets merged in mainline.
>
> Yes, I applied it to the .33.1 release. But it does not apply cleanly
> to the .32 kernel. If you wish to see it there, please, can someone
> provide me with a backported version?

Will do, it will be in the next batch of -stable thinkpad-acpi fixes.

--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh



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