[Nix-dev] Problem with ATI graphics card

[Marco Maggesi]

As suggested in the discussion of the issue I circumvented the problem by
setting radeon.modeset=0.
Thank you for the reference.
Marco

2012/7/31 Cillian de Róiste <cillian.deroiste at gmail.com>

> On Tue, Jul 31, 2012 at 11:23 AM, Marco Maggesi <maggesi at math.unifi.it>
> wrote:
> > Hi,
> >
> > I'm trying to reinstall nixos on an my desktop computer (after an HD
> > replacement due to a bad corruption).
> > The installation process goes smoothly, but after reboot (during Stage 2)
> > the screen become unreadable (a set of randomly distributed coloured
> > pixels).
> >
> > This happens under various different configurations:
> > - with my old configuration.nix
> > - with a brand new configuration.nix created by the installation scripts
> > - with xserver enabled and disabled
> >
> > When booted from the installation/rescue CD the graphics card works
> > normally, either in text mode and with x11.
> >
> > Here is the line of output of lspci that describe the graphics card:
> >
> > 01:00.0 VGA compatible controller: ATI Technologies Inc RV610 video
> device
> > [Radeon HD 2400 PRO]
> >
> > What could I do?
>
> I guess it's missing the firmware, there is a work around:
> https://github.com/NixOS/nixos/issues/6
>
> Cheers,
> Cillian
>
> > Thanks,
> > Marco
> >
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