How to debug Xorg startaup hangs (ATI Radeon 9550)

[Jerome Glisse]

On 10/26/06, Stefan Schwandter <schwandter at gmail.com> wrote:
> Hello,
>
>
> I'm a bit frustrated, because X often hangs on startup - not every
> time, but nearly half of the time. I've tried various combinations of
> 16bit/24bit color depth, dri enabled/disabled.
>
> X startup looks like the following on my system: my LCD goes black,
> and shows "digital" - it detects a signal at the digital input port.
> Then a few seconds pass, and if I'm lucky, "digital" appears again and
> then the desktop. If I have bad look, it doesn't...
>
> I have Fedora Core 6 - but the problem has been around for a long
> time, also in Fedora Core 5. I have a Radeon 9550 card, detected as
> "Chipset ATI Radeon 9600 AS (AGP)".
>
> I would really like to help debug this problem - please tell me how.
>
>
> regards, Stefan

Please provide more information like your xorg.conf and
an xorg.log from a crashing x launch. Debugging such issue
is far from being easy. Maybe this can get you started:

http://xorg.freedesktop.org/wiki/DebuggingTheXserver

best,
Jerome Glisse