Re: Ctrl-Alt-F1,F2,F3 ... can not start a console.

["Feng Shu" <tumashu@163.com>]

Marius Bakke <mbakke@fastmail.com> writes:

> Feng Shu <tumashu@163.com> writes:
>
>> "Feng Shu" <tumashu@163.com> writes:
>>
>>> ludo@gnu.org (Ludovic Courtès) writes:
>>>
>>>> Hi,
>>>>
>>>> "Feng Shu" <tumashu@163.com> skribis:
>>>>
>>>>> Yestaday, I reinstall my guixsd, and install xfce4 as my desktop.
>>>>> A problem faced is that: When I press Ctrl-Alt-F1, F2, F3 ...
>>>>> I can not start a tty, instead of start a slim login picture?
>>>>
>>>> Can you reproduce the problem in a VM created by ‘guix system vm’?
>>>> (Note that in QEMU you need to do ctrl-1 to go to the QEMU console, then
>>>> “sendkey ctrl-alt-f1”, and then ctrl-2 to switch back to the VM screen.)
>>>>
>>>> If not, could it be that the problem has to do with the graphics driver
>>>> being used?
>>>
>>> qemu vm works well, may be it is graphics driver problem as you said, I
>>> will wait to update driver, thanks for the help!
>>>
>>>>
>>
>> When I revert "gnu: xf86-video-ati: Update to 7.10.0." , it works well.
>>
>> 84023d2fa4a47e3ac0248d304324161c041858aa
>
> Uff.  I suspect it's related to this snippet from the ChangeLog[0]:
>
> * The driver now takes measures to prevent other DRM master processes
>   (potentially from other local users) from accessing buffers created by
>   this driver while switched away to a different VT. Other DRM master
>   processes should only be able to access a single buffer anymore, which
>   contains only all-black pixels.
>
> Are you willing to report this bug upstream?  See here for information:
>
> https://freedesktop.org/wiki/Software/xorg/

I don't fimilar xorg, and my English is poor, but I send a report....

https://bugs.freedesktop.org/show_bug.cgi?id=102948

>
> We should probably revert this on 'master' meanwhile.  Unfortunately I
> don't have ATI hardware to test with, so it would be good if someone
> else could try to reproduce this problem.

Good idea....

>
> [0] https://lists.x.org/archives/xorg-announce/2017-September/002806.html
>

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