Bug#867701: Radeon HD 6450, black screen, cursor, no console

[Michel Dänzer]

On 15/07/17 07:24 AM, Ivan Sergio Borgonovo wrote:
> On 07/15/2017 05:29 AM, Michel Dänzer wrote:
>> On 15/07/17 07:10 AM, Ivan Sergio Borgonovo wrote:
>>> On 07/10/2017 04:03 AM, Michel Dänzer wrote:
>>>> On 09/07/17 03:06 AM, Ivan Sergio Borgonovo wrote:
> 
>> Please provide the output of the following:
>>
>> apt-cache policy libegl1-mesa
>>
>> ldconfig -p|grep libEGL
> 
> See attachments.

Hmm, the string "EGL search path is" and the corresponding code was 
removed upstream for Mesa 10.6. Look for instances of libEGL.so.1* other 
than /usr/lib/x86_64-linux-gnu/libEGL.so.1* on your system and see if 
removing those helps.


>>>> Does the same problem happen with 1:7.8.0-1+b1 with
>>>>
>>>>      Option "AccelMethod" "glamor"
>>>>
>>>> in /etc/X11/xorg.conf ?
>>>
>>> Older xserver-xorg-video-radeon with that option DOESN'T WORK.
>>> Black screen, text cursor at the top right corner ( _ ).
>>
>> Right, as expected the problem is specific to glamor, which is the
>> default for your GPU in 7.9.0 but wasn't yet in 7.8.0. This means in the
>> worst case you can work around the problem with
>>
>>     Option    "AccelMethod" "EXA"
>>
>> in /etc/X11/xorg.conf.
> 
> Thanks, this solved the problem.
> 
> Could I suggest to add some notes in the changelog before closing the bug?

It's just a workaround. We don't know yet what the problem is, though 
it's likely specific to your system.


-- 
Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer