<p dir="ltr">On Oct 21, 2015 08:54, "Miguel A. Rojas" <<a href="mailto:mianrojas@gmail.com">mianrojas@gmail.com</a>> wrote:<br>
><br>
> On 10/21/2015 12:22 AM, Luca Boccassi wrote:<br>
>>><br>
>>> Hi Miguel,<br>
>>><br>
>>> The reason I'm asking is because I can't reproduce any problems on GDM,<br>
>>> with any software that uses GLX or other libraries, after adding the<br>
>>> workaround.<br>
>>><br>
>>> But I noticed something looking again at the system info you forwarded,<br>
>>> the only user in the "video" group is sddm:<br>
>>><br>
>>> video:x:44:sddm<br>
>>><br>
>>> I verified yesterday that even on GDM both the DM-manager user (in my<br>
>>> case Debian-gdm) AND my user MUST be in the video group, otherwise the<br>
>>> problem occurs.<br>
>>><br>
>>> Could you please try to add your user to the video group and see if that<br>
>>> helps?<br>
><br>
> 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.<br>
><br>
> Good shot!</p>
<p dir="ltr">Happy to hear that. Now we now that not only gdm, but also kde has that requirement when the device nodes have restrictive permissions.</p>
<p dir="ltr">>> We are still discussing and investigating that. It is not a new upstream<br>
>> requirement but a fix to the device nodes permissions that we are trying<br>
>> out, but it seems to be causing way too much grief. Please see this<br>
>> message by Andreas [1] for more details about the background.<br>
>><br>
>> Kind regards,<br>
>> Luca Boccassi<br>
><br>
> I am sorry, I don't see the message from Andreas your are referring to.</p>
<p dir="ltr">That's because I forgot to paste the URL :-)</p>
<p dir="ltr"><a href="http://lists.alioth.debian.org/pipermail/pkg-nvidia-devel/2015-October/011948.html">http://lists.alioth.debian.org/pipermail/pkg-nvidia-devel/2015-October/011948.html</a></p>
<p dir="ltr">Kind regards,<br>
Luca Boccassi<br>
</p>