[CentOS] Graphic setup issues...help wanted

Kay Schenk
Thu, 14 Jan 2021 23:02:09 -0000

On 1/10/21 9:40 PM, Anthony K wrote:
> On 11/1/21 8:33 am, Kay Schenk wrote:
>>
>> . . .
>>
>> From messages I've seen on this problem, the lack of
>>
>> /dev/dri/card0
>>
>> is the crux of the issue but I have NO idea of how it gets created.
>>
>> So, right now I'm stuck? at a default resolution of 1024 x 768
>>
>> Thanks for any help.
>>
> Sure sounds like an Optimus [0] issue.? This plagued me for a long
> time on Ubuntu (back in the 12-16 releases) but seems to be all sorted
> now. Try disabling the NVIDIA card in the BIOS and see if you are at
> least able to use higher resolutions via the built-in GPU.
>
> [0]: https://forums.centos.org/viewtopic.php?t=72534


Back again...I've taken a look at the CentOS forum thread but it doesn't
directly address my problem

OK, the problem is absolutely positively that the intel i915 module is
not able to load at boot time...re DMESG (I did finally get the sound to
work with appropriate firmware)

[?? 78.597678] sof-audio-pci 0000:00:1f.3: init of i915 and HDMI codec
failed

other exploration showed me my system set up Intel as default VGA (or not?)

lspci | grep VGA

00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630
(Mobile)
01:00.0 VGA compatible controller: NVIDIA Corporation TU117GLM [Quadro
T1000 Mob

grep . /sys/bus/pci/devices/{0000:00:02.0,0000:01:00.0}/boot_vga

/sys/bus/pci/devices/0000:00:02.0/boot_vga:1
/sys/bus/pci/devices/0000:01:00.0/boot_vga:0

my kernel line is:

GRUB_CMDLINE_LINUX="resume=UUID=a8b2287c-2f04-4447-a88f-52a8fa3439b5
nomodeset"


Command : lshw -c video

shows both cards unclaimed but NVIDIA first ???? ...

Should I manually load this module at boot time? Does anyone know WHY
the i915 won't load at boot?

With 8.2 on this same machine, the Intel graphics was loaded.


>
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MzK