Bug#943664: xserver-xorg-video-radeon: Same behaviour on Thinkpad T41

[Petra R.-P.]

Am Fr.,  1. Nov. 2019, um 17:25 +0100 schrieb Petra R.-P. <debml at prp.in-berlin.de>:

> Maybe I should mention that this old notebook is running with an
> external monitor because its own display is faulty.

I have just performed the (weekly) Debian testing updates on my
other computers (the problematic notebook I was writing about is
updated on a daily basis):

 -> another Thinkpad T41, but with intact display and without
    external monitor,
 -> a Thinkpad T420,
 -> a "normal" PC.

There was no problem with any of them  :-)

So the cause of the problem may well be the external monitor, 
or HW acceleration.  How can I find out if this is activated
in the "good" T41?

   Best regards,
       Petra