[Bug 17048] [rv635] blank screen and hangs radeon 3650 on amd6

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17048


Robin Johnson <robbat2 at gentoo.org> changed:

           What    |Removed                     |Added
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                 CC|                            |robbat2 at gentoo.org




--- Comment #8 from Robin Johnson <robbat2 at gentoo.org>  2008-09-01 16:46:13 PST ---
I ran into this in 2.6.27-rc5-00006-gbef69ea yesterday (latest Git kernel), and
latest Git ati driver, so I don't think it's fixed in new kernels.

Testing specifics:
- To trigger the bug, you MUST cause the card to POST with a display on the
DVI-0 output. If there is only a display on the DVI-1 output, it works
perfectly. Simply disconnecting the DVI-0 output is not sufficent.

I did however trace it using poor-mans debugging (print statements). In
src/radeon_modes.c, the RADEONProbeOutputModes, this block:
285    if (output->MonInfo)
286        modes = xf86OutputGetEDIDModes (output);

It's inside that call that it's hanging. After commenting out those two lines,
X comes up perfectly for me.

Maybe related, maybe unrelated, when I exit X with that change, sometimes the
contents of DVI-0 end up on both monitors again, frozen so the console isn't
restored.


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