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

[Peter Theunis]

Hey,

I believe that a stock redhat kernel has all these nice little features built as modules so you list the loaded modules to find out what was recognized and loaded; simply issue the following commands as root:

List loaded modules
"lsmod"
This should return you a list that might contain the offending radeonfb

Remove a loaded module
"rmmod module", in this case "rmmod radeonfb"
Insert a module
"modprobe module"

see if that helps,

p

Mark G. Spencer [mspencer@evidentdata.com] wrote:
> Hi Peter,
> 
> Sorry to be a newbie Linux dork .. But .. How would I know if my system is
> loading that module?
> 
> Thanks,
> 
> Mark
> 
> -----Original Message-----
> From: linux-thinkpad-admin@linux-thinkpad.org
> [mailto:linux-thinkpad-admin@linux-thinkpad.org] On Behalf Of Peter Theunis
> Sent: Monday, September 22, 2003 3:51 PM
> To: linux-thinkpad@linux-thinkpad.org
> Subject: Re: [ltp] Thinkpad T40 screen goes dead under Red Hat 9 ..
> 
> 
> Hi,
> 
> Is the system loading the "radeonfb" module ?
> if so, disable it and use the vesafb module instead; the radeon framebuffer
> is known to break suspend.
> 
> Hope this helps,
> 
> p
> Mark G. Spencer [mspencer@evidentdata.com] wrote:
> > 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
> 
> -- 
> I'm a VIP at my local liquor store and I'm root. Fear me !
> -- 
> The linux-thinkpad mailing list home page is at:
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> 
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-- 
I'm a VIP at my local liquor store and I'm root. Fear me !