[ltp] Thinkpad T40 screen goes dead under Red Hat 9 ..

[Dan Borello]

I just installed debian on mine.  It seems to do the same thing.  I haven't tried to fix it yet.  One work around that works for me is that if you attempt to wake it up, switch to a console, blank the screen (fn-f3) and then wake it back up it comes back alive.

Let me know if that works.  I am going to tweak X and see what I can do.

dan

---- Original message ----
>Date: Mon, 22 Sep 2003 21:43:07 -0400
>From: Carl Friedberg <friedberg@comets.com>  
>Subject: RE: [ltp] Thinkpad T40 screen goes dead under Red Hat 9 ..  
>To: linux-thinkpad <linux-thinkpad@linux-thinkpad.org>
>
>Perhaps these links gleaned from Google could be of some help; if so
>please let us know...
>
>http://acpi.sourceforge.net/documentation/howto.html
>
>http://acpi.sourceforge.net/documentation/howto.html
>
>From the howto, more references:
>
>If you would like more information on power management
> in laptops, check out the resources on tuxmobil.org.
>
>http://www.tuxmobil.org/
>
>Specifically: Power Management with Linux - APM, ACPI,
>PMU
>http://tuxmobil.org/apm_linux.html and
> the Hardware in Detail section
>
>http://tuxmobil.org/Mobile-Guide.db/mobile-guide-p2c1-hardware-in-detail.html
>
>of the Linux Mobile Guide.
>http://tuxmobil.org/Mobile-Guide.db/Mobile-Guide.html
>
>
>
>Carl
>
>> -----Original Message-----
>> From: Mark G. Spencer [mailto:mspencer%evidentdata.com@fwd.com]
>> Sent: Monday, September 22, 2003 5:42 PM
>> To: linux-thinkpad
>> Subject: [ltp] Thinkpad T40 screen goes dead under Red Hat 9 ..
>> 
>> 
>> My company recently purchased three new Thinkpad T40's with 
>> the ATI Radeon
>> 9000 video chipset.  I got lucky enough to score one.
>> 
>> A very aggravating problem has been found when running Red 
>> Hat Linux 9 on
>> these notebook computers.  The screens go into some kind of 
>> power saving
>> that we can never get them out of.  When running on battery 
>> it only takes
>> what seems like a few minutes of inactivity.  When running on 
>> AC power, it
>> takes longer to happen, but eventually the screens go dark.  
>> As far as I can
>> tell, the hard drive and cpu are still operating, but the 
>> screen just goes
>> dark.
>> 
>> The screensaver power management functions are not enabled in 
>> Red Hat for
>> these machines, the default setting.  This behavior does not 
>> occur on these
>> Thinkpad T40 notebooks when running Windows XP Professional, 
>> and we do not
>> get this problem on any of our other make notebooks (Sony, 
>> Fujitsu, etc.)
>> when running Red Hat Linux 9.
>> 
>> I'm hoping I do not have to kill all power saving features in 
>> the BIOS and
>> can instead come to some kind of solution within Red Hat 9 to 
>> keep these
>> machines from going into the terminal blank screen .. 
>> 
>> Thanks for the advice,
>> 
>> Mark
>> 
>> --
>> The linux-thinkpad mailing list home page is at:
>> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
>> 
>-- 
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