Bug#800938: Bug#799948: Plasma desktop is unable to start (black screen - panic)

[Luca Boccassi]

On Oct 21, 2015 08:54, "Miguel A. Rojas" <mianrojas at gmail.com> wrote:
>
> On 10/21/2015 12:22 AM, Luca Boccassi wrote:
>>>
>>> Hi Miguel,
>>>
>>> The reason I'm asking is because I can't reproduce any problems on GDM,
>>> with any software that uses GLX or other libraries, after adding the
>>> workaround.
>>>
>>> But I noticed something looking again at the system info you forwarded,
>>> the only user in the "video" group is sddm:
>>>
>>> video:x:44:sddm
>>>
>>> I verified yesterday that even on GDM both the DM-manager user (in my
>>> case Debian-gdm) AND my user MUST be in the video group, otherwise the
>>> problem occurs.
>>>
>>> Could you please try to add your user to the video group and see if that
>>> helps?
>
> And it seems that works like a charm! It seems KDE only needs sddm and
your user to be included in the video group. No more panics or black
screens.
>
> Good shot!

Happy to hear that. Now we now that not only gdm, but also kde has that
requirement when the device nodes have restrictive permissions.

>> We are still discussing and investigating that. It is not a new upstream
>> requirement but a fix to the device nodes permissions that we are trying
>> out, but it seems to be causing way too much grief. Please see this
>> message by Andreas [1] for more details about the background.
>>
>> Kind regards,
>> Luca Boccassi
>
> I am sorry, I don't see the message from Andreas your are referring to.

That's because I forgot to paste the URL :-)

http://lists.alioth.debian.org/pipermail/pkg-nvidia-devel/2015-October/011948.html

Kind regards,
Luca Boccassi
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