Hello
I have a problem using a 1024x768 Eizo Monitor attached by DVI-D to a system with GMA500 based graphics and running under Linux-3.7.
As soon as the GMA500 driver is taking over control, the refresh rate raises to 64.5Hz and the monitor reports a "signal error".
For me i looks like the GMA500 driver is reprogramming the VCO to a too high dot clock. If i lower the "I9XX_VCO_MIN" value to 1300000, everything is fine.
Is the "I9XX_VCO_MIN" value used in the GMA500 driver correct?
Dave
On Fri, Feb 8, 2013 at 2:51 PM, "David Müller (ELSOFT AG)" d.mueller@elsoft.ch wrote:
Hi Dave The value of VCO_MIN comes from the Intel PRM for similar GPUs.
Instead of changing VCO_MIN, could you try setting N_MIN=1, N_MAX=6 and M1_MAX=22? I'll test it on my own hardware tomorrow.
-Patrik
On Mon, Feb 11, 2013 at 2:15 PM, "David Müller (ELSOFT AG)" d.mueller@elsoft.ch wrote:
Those values come from the i915 driver and should work fine for us as well. I had no problems at my end so I'll submit a patch for this.
-Patrik
On Mon, Feb 11, 2013 at 11:18 PM, Patrik Jakobsson patrik.r.jakobsson@gmail.com wrote:
I've sent in a patch for this: http://lists.freedesktop.org/archives/dri-devel/2013-February/034990.html it is slightly different to what I proposed earlier. Would be nice if you could give it a spin and report back.
Thanks Patrik
dri-devel@lists.freedesktop.org
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"David Müller (ELSOFT AG)" -
Patrik Jakobsson