Fresh install, i5-11600K, scaled video

goosesensor · 01-18-2022, 12:57 AM

I just installed Debian 11 onto some new hardware (i5-11600K, UHD Graphics 750) and video isn't working properly.

Code:

mkd@thing:~$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1024 x 768, current 1024 x 768, maximum 1024 x 768
default connected 1024x768+0+0 0mm x 0mm
   1024x768      76.00*

Code:

mkd@thing:~$ sudo lshw -c video
  *-display UNCLAIMED       
       description: VGA compatible controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 04
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:59000000-59ffffff memory:40000000-4fffffff ioport:3000(size=64) memory:c0000-dffff

Notice the line "*-display UNCLAIMED"

Code:

mkd@thing:~$ lspci -k
[...]
00:02.0 VGA compatible controller: Intel Corporation Device 4c8a (rev 04)
	DeviceName: Onboard - Video
	Subsystem: Gigabyte Technology Co., Ltd Device d000
	Kernel modules: i915
[...]

This is the only entry mentioning "VGA" or "video".

Note that the motherboard is strange in that it does not have HDMI or DisplayPort outputs, only two Thunderbolt 4 ports. (Motherboard: https://www.gigabyte.com/Motherboard...D-rev-10/sp#sp) The specs for the motherboard state that the Thunderbolt ports "[support] DisplayPort and Thunderbolt™ video outputs". I'm using it with a Thunderbolt->HDMI adapter.

Any help much appreciated!

mrmazda · 01-18-2022, 02:44 AM

xrandr --listproviders should show a list of available graphics outputs if the i915 kernel module is loaded.

I'd return it to vendor and get a motherboard with real DisplayPort and HDMI outputs. Just don't buy an Asus B560M-A, which has 1 DP and 2 HDMI outputs. I bought one last month with an i5-11400. It won't boot with more than one connected display. It works fine when additional display(s) is/are connected after booting. Asus response is virtually non, asking for more information multiple times when I gave them all they need on the first contact.

It escapes me ATM what I had to do with Bullseye to get proper video output with the i5-11400's 730 graphics, but it is working with my 2560x1440 and 2560x1080 and 1920x1200 displays as long as I connect no more than one for booting. When I remember I'll return....

I'm back. I installed the bpo kernel 5.14.

goosesensor · 01-18-2022, 01:48 PM

Quote:

Originally Posted by mrmazda

xrandr --listproviders should show a list of available graphics outputs if the i915 kernel module is loaded.

I'd return it to vendor and get a motherboard with real DisplayPort and HDMI outputs. Just don't buy an Asus B560M-A, which has 1 DP and 2 HDMI outputs. I bought one last month with an i5-11400. It won't boot with more than one connected display. It works fine when additional display(s) is/are connected after booting. Asus response is virtually non, asking for more information multiple times when I gave them all they need on the first contact.

It escapes me ATM what I had to do with Bullseye to get proper video output with the i5-11400's 730 graphics, but it is working with my 2560x1440 and 2560x1080 and 1920x1200 displays as long as I connect no more than one for booting. When I remember I'll return....

I'm back. I installed the bpo kernel 5.14.

Dang, 'xrandr --listproviders' returns 'Providers: Number : 0'

I guess I will return this mobo.. second one, too. The first was an Asrock that was DOA :\

mrmazda · 01-18-2022, 03:00 PM

I don't think a default Debian 11 installation supports the 11th gen CPUs, which is why I installed the bpo kernel. Likely that's all you need to do if you have the correct video cable adapters.

Code:

# inxi -CSy
System:
  Host: ab560 Kernel: 5.14.0-0.bpo.2-amd64 x86_64 bits: 64
    Desktop: Trinity R14.0.12 Distro: Debian GNU/Linux 11 (bullseye)
CPU:
  Info: 6-core model: 11th Gen Intel Core i5-11400 bits: 64 type: MT MCP
    cache: L2: 3 MiB
  Speed (MHz): avg: 800 min/max: 800/4400 cores: 1: 801 2: 801 3: 801 4: 801
    5: 801 6: 801 7: 801 8: 801 9: 801 10: 800 11: 801 12: 801
# inxi -Myz
Machine:
  Type: Desktop System: ASUS product: N/A v: N/A serial: N/A
  Mobo: ASUSTeK model: PRIME B560M-A v: Rev 1.xx serial: <filter>
    UEFI: American Megatrends v: 1203 date: 10/27/2021
# inxi -Gayz
Graphics:
  Device-1: Intel vendor: ASUSTeK driver: i915 v: kernel bus-ID: 00:02.0
    chip-ID: 8086:4c8b class-ID: 0300
  Display: x11 server: X.Org 1.20.11 driver: loaded: modesetting
    unloaded: fbdev,vesa display-ID: :0 screens: 1
  Screen-1: 0 s-res: 2560x1440 s-dpi: 120 s-size: 541x304mm (21.3x12.0")
    s-diag: 621mm (24.4")
  Monitor-1: DP-1 res: 2560x1440 hz: 60 dpi: 109
    size: 598x336mm (23.5x13.2") diag: 686mm (27")
  OpenGL: renderer: Mesa Intel Graphics (RKL GT1) v: 4.6 Mesa 20.3.5
    direct render: Yes
# xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x46 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 4 associated providers: 0 name:modesetting
#

goosesensor · 01-18-2022, 10:55 PM

That did the trick, thank you!

For future searchers I used this guide: https://www.linuxcapable.com/how-to-...n-11-bullseye/