CentOS 7.9 10th gen Intel UHD Graphics Unknown Display

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linux4ever
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Joined: 2021/03/19 16:42:57

CentOS 7.9 10th gen Intel UHD Graphics Unknown Display

Post by linux4ever » 2021/03/19 17:25:57

I recently purchased a Dell Optiplex 7080 w/ Intel i7-10700. Installed with CentOS 7.9 just fine. I am now unable to change display resolution. Settings shows "Unknown Display". Preliminary investigation shows PCI ID 8086:9bc5 (rev 05) as "UHD Graphics 630" via devicehunt.com.

Code: Select all

$ dmesg
...
snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec
...
Package xorg-x11-drv-intel-2.99.917-28.20180530.el7.x86_64 is installed.

My understanding is graphics support was added in later versions of the kernel. I'd like to stick with the official CentOS 7.9 kernel. Is there a way to update/backport the driver myself?

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TrevorH
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Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: CentOS 7.9 10th gen Intel UHD Graphics Unknown Display

Post by TrevorH » 2021/03/19 17:47:17

It's listed as supported by the i915 driver on CentOS 8 but not on 7. I suspect it will never be added as CentOS/RHEL 7 has gone past the date when they add new hardware support. It _might_ work if you used the ELRepo kernel-ml but I don't know whether it also needs the xorg support too.
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke

muforum
Posts: 1
Joined: 2021/05/31 08:13:03

Re: CentOS 7.9 10th gen Intel UHD Graphics Unknown Display

Post by muforum » 2021/05/31 08:22:05

TrevorH wrote:
2021/03/19 17:47:17
It's listed as supported by the i915 driver on CentOS 8 but not on 7. I suspect it will never be added as CentOS/RHEL 7 has gone past the date when they add new hardware support. It _might_ work if you used the ELRepo kernel-ml but I don't know whether it also needs the xorg support too.
Hi @TrevorH
Perhaps in some other way to solve this? (Without switching to CentOS 8)
- Maybe install or compile something?

Code: Select all

$ cat /etc/*elease
CentOS Linux release 7.9.2009 (Core)
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-7"
CENTOS_MANTISBT_PROJECT_VERSION="7"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="7"

CentOS Linux release 7.9.2009 (Core)


$ lspci -v
...
00:02.0 VGA compatible controller: Intel Corporation Device 9bc5 (rev 05) (prog-if 00 [VGA controller])
	Subsystem: Hewlett-Packard Company Device 8712
	Flags: bus master, fast devsel, latency 0, IRQ 255
	Memory at e0000000 (64-bit, non-prefetchable) [size=16M]
	Memory at d0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at 3000 [size=64]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: <access denied>
	
$ dmesg | grep i915
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.10.0-1160.25.1.el7.x86_64 root=/dev/mapper/centos00-root ro crashkernel=auto rd.lvm.lv=centos00/root rd.lvm.lv=centos00/swap nvme_core.default_ps_max_latency_us=0 hgb quiet
[    0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-3.10.0-1160.25.1.el7.x86_64 root=/dev/mapper/centos00-root ro crashkernel=auto rd.lvm.lv=centos00/root rd.lvm.lv=centos00/swap nvme_core.default_ps_max_latency_us=0 rhgb quiet
[    3.318811] snd_hda_codec_hdmi hdaudioC0D2: No i915 binding for Intel HDMI/DP codec

$ xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected primary 1920x1080+0+0 0mm x 0mm
   1920x1080     77.00* 


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TrevorH
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Posts: 33202
Joined: 2009/09/24 10:40:56
Location: Brighton, UK

Re: CentOS 7.9 10th gen Intel UHD Graphics Unknown Display

Post by TrevorH » 2021/05/31 13:03:17

It _might_ work if you used the ELRepo kernel-ml but I don't know whether it also needs the xorg support too.
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke

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