[Bug 44811] missing dual display (single only) after switching to KMS driver on radeon firegl x1 (R300)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=44811

--- Comment #20 from Alex Deucher <agd5f at yahoo.com> 2012-03-19 07:08:06 PDT ---
(In reply to comment #19)
> > There are two 1680x1050 modes in the EDID:
> >
> > 1. 1680x1050 @ 146.25 Mhz
> > 2. 1680x1050 @ 119.00 Mhz
> 
> This modes are that what was mentioned before? This are both this
> modes(0x53,0x54)? As far i remember that changing it didn`t give any results
> but i`ll check again today.

yes.  The only difference in the register dump was the mode timing.  KMS was
using the 146.25 Mhz mode while UMS was using the 119.00 Mhz mode.  If
switching doesn't help can you dump the registers with KMS for both the 146.25
Mhz mode and the 119.00 Mhz modes to make sure that the changes are actually
getting to the kernel driver?

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