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bug#36069: Menu-based installer unusable through noVNC

From: Mark H Weaver
Subject: bug#36069: Menu-based installer unusable through noVNC
Date: Fri, 19 Jul 2019 12:37:12 -0400


Ludovic Courtès <address@hidden> wrote:

> Robert Vollmert <address@hidden> skribis:
>>> On 26. Jun 2019, at 22:23, pelzflorian (Florian Pelz) <address@hidden> 
>>> wrote:
>>> On Wed, Jun 26, 2019 at 06:51:41PM +0200, Björn Höfling wrote:
>>>> What's the conclusion? Maybe that Guix is fine and the VNC-clients are
>>>> also fine. It might just be a matter of configuration or using an older
>>>> version with bugs?
>>> Passing “-vga cirrus” reduces the display size.
>>> The command “man qemu” says:
>>> -vga type
>>>    Select type of VGA card to emulate. Valid values for type
>>>    are
>>>    cirrus
>>>        Cirrus Logic GD5446 Video card. All Windows versions
>>>        starting from Windows 95 should recognize and use
>>>        this graphic card. For optimal performances, use 16
>>>        bit color depth in the guest and the host OS.  (This
>>>        card was the default before QEMU 2.2)
>>> So presumably the VPS is using an old QEMU or passes -vga cirrus.
>> Great find! Indeed, lspci lists
>> 00:02.0 VGA compatible controller: Cirrus Logic GD 5446
>> Is this something that could be fixed by including a driver for that
>> card in the kernel?
> I suppose so.
> Mark, WDYT about adding support for Cirrus VGA cards to the kernel?
> What would it take to do so?

I know of two kernel configuration options for Cirrus video cards:

  CONFIG_DRM_CIRRUS_QEMU: Cirrus driver for QEMU emulated device
  CONFIG_FB_CIRRUS: Cirrus Logic support

CONFIG_DRM_CIRRUS_QEMU is enabled as a module in all of our
configurations except for 5.2-arm-veyron.conf.  CONFIG_FB_CIRRUS is
enabled as a module in all of our x86_64 and i686 configurations.

Is there something else I've overlooked?


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