[meta-freescale] X11 resolution detection problem with 3.10.17-1.0.0-beta BSP [was Re: [meta-fsl-arm-extra PATCH v3 2/3] linux-cubox-i: Add Vivante GPU 4.6.9p13 support]

Carlos Rafael Giani dv at pseudoterminal.org
Thu Jan 30 02:34:12 PST 2014

One important detail is that the issue the cea mode patch fixes does not 
occur if the machine is connected to a true HDMI device. It only happens 
with DVI ones, because the list of CEA modes is always empty with a DVI 
monitor. If resolution issues appear even with a true HDMI monitor, then 
it may not be the same problem.

On 2014-01-30 11:28, Otavio Salvador wrote:
> Hello Carlos,
> On Thu, Jan 30, 2014 at 8:18 AM, Carlos Rafael Giani
> <dv at pseudoterminal.org> wrote:
>> I did a quick test with a DVI monitor connected to the machine with a
>> HDMI-DVI cable. In X11, I get only 1024x768, even though the monitor's
>> native resolution is 1280x720. The boot splash and framebuffer console work
>> in native 1280x768.
>> I have seen a similar problem back then with both framebuffer and X11. It
>> was the reason for the cea mode patch in the cubox-i kernel (the patch is
>> included in meta-fsl-arm-extra). I suspect something similar is going on
>> with the newer Vivante drivers.
> Yes, it seems.
> So far we have reports[1] it has issues in:
> Boundary Devices Nitrogen6x
> Freescale SABRE SD
> CuBox-i
> 1. https://lists.yoctoproject.org/pipermail/meta-freescale/2014-January/006759.html
> So it does seem to be a regression. I didn't hear back from Lauren yet
> (here at Cc) but I won't merge 3.10.17 until we solve this regression.
> Thanks for reporting it.

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