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

Michel Dänzer michel at daenzer.net
Sat Jul 15 03:29:39 UTC 2017

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:
>>> Package: xserver-xorg-video-radeon
>>> Version: 1:7.9.0-1
>>> Severity: grave
>> I doubt this severity is justified.
> Why?
> X doesn't start so it "makes the package in question unusable", not to
> mention that it makes all packages requiring X unusable.

The bug severities are defined in the context of all users, not just
some individual users. "Makes the package in question unusable" means
the package cannot be used on any system, which isn't the case here (or
there would have been many more reports about it, but there hasn't been
any other report).

>> Is there more information in the Xorg stderr output? Maybe try setting
>> the environment variable EGL_LOG_LEVEL=debug as well for that.
> See atachments.


> libEGL debug: EGL search path is /usr/lib/x86_64-linux-gnu/egl

Please provide the output of the following:

apt-cache policy libegl1-mesa

ldconfig -p|grep libEGL

>> 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.

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

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