Hi Am 25.07.23 um 23:31 schrieb Roger Sewell:
Thomas, Thank you for your reply.Table 10 in the following document says that 1440x900@60Hz is supported: https://www.intel.com/content/dam/support/us/en/documents/motherboards/server/s5520ur/sb/e44031012_s5520ur_s5520urt_tps_r1_9.pdfThat manual says that the resolution is only supported with at most 24-bit colors. The old X code still supports that to some extend, but modern userspace doesn't.How can I check for sure whether I am using 24 or 32 bits per pixel ?
Could you provide us with the Xorg logs from /var/log/Xorg.0.log , please?Specifically, I'd be interested in different logs from combinations of the old and new kernel and the old and new userspace.
Best regards Thomas
so in particular the chip is said to be a G200e, not the G200SE-A that the kernel module seems to be interpreting it as.It actually is the G200SE-A. It's just named differently by lspci. The PCI device id should be 0x0522.It is indeed 0x0522.So the old kernel already did the right thing.(but if I understand the situation right Xorg didn't ?)You can do cat /sys/class/drm/card1-VGA-1/modes on the old and new kernel. With a monitor connector, it will tell you the supported resolutions.With the new kernel and the unmodified mgag200 module it tells me that 1440x900 is not on the list - but Xorg still lists it under Settings->Display (and Wayland doesn't). With the increased bandwidth module in place it tells me 1440x900 is on the list. I think this is as you expect as far as the kernel rather than Xorg is concerned. Thanks, Roger.
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nuernberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman HRB 36809 (AG Nuernberg)
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