Hi Am 19.09.22 um 17:25 schrieb Jocelyn Falempe:
On 15/09/2022 17:03, Thomas Zimmermann wrote:G200ER does not seem to support 24 bpp, so force the console to use 32 bpp. The problem was introduced, when commit 73f54d5d9682 ("drm/mgag200: Remove special case for G200SE with <2 MiB") changed the preferred color depth from 32 bit to 24 bit. A setting of 24 is the correct color depth, but G200ER doesn't seem to be able to use the respective RGB888 color format. Using 24-bit color with forced 32 bpp works around the problem.Thanks for the patch.At least on my G200EW, 24 bpp is working well. So maybe only the G200ER is affected.
I could not reproduce the problem either. Probably only G200ER is affected. Javier suggested to make add a quirk specifically for the particular DELL machine.
In the drm-tip, the code has meanwhile been split up by hardware revisions. So we can fix the problem by not exporting RGB888 at all on G200ER.
Best regards Thomas
I think it may have a performance penalty, I will try to measure it. > Reviewed-by: Jocelyn Falempe <jfalempe@xxxxxxxxxx>
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev
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