I installed Debian 11 in my old Ubuntu system that has same issue before. At that time I need to chose lightdm instead of gdm3 as a login service.Gdm3 (I tried also under ssdm but same issue ) gives distorted display like image underneath
Is it possible to fix that under gdm3?
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@Whynot:~$ lspci | grep ' VGA '
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV535 [Radeon X1650 PRO] (rev 9e)
whynot@Whynot:~$ uname -a
Linux whynot 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 GNU/Linux
whynot@Whynot:~$ lspci -nnk | grep -i vga -A3 | grep 'in use'
Kernel driver in use: radeon
whynot@Whynot:~$ sudo update-pciids
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 272k 100 272k 0 0 311k 0 --:--:-- --:--:-- --:--:-- 311k
Done.
whynot@Whynot:~$ lspci -nn | grep -E 'VGA|Display'
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV535 [Radeon X1650 PRO] [1002:71c7] (rev 9e)
01:00.1 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] RV535 [Radeon X1650 PRO] (Secondary) [1002:71e7] (rev 9e)
whynot@Whynot:~$ sudo dmesg | egrep 'drm|radeon'
[ 3.146536] [drm] radeon kernel modesetting enabled.
[ 3.146615] radeon 0000:01:00.0: vgaarb: deactivate vga console
[ 3.147336] [drm] initializing kernel modesetting (RV530 0x1002:0x71C7 0x174B:0x0840 0x9E).
[ 3.148717] [drm] Generation 2 PCI interface, using max accessible memory
[ 3.148722] radeon 0000:01:00.0: VRAM: 256M 0x0000000000000000 - 0x000000000FFFFFFF (256M used)
[ 3.148725] radeon 0000:01:00.0: GTT: 512M 0x0000000010000000 - 0x000000002FFFFFFF
[ 3.148739] [drm] Detected VRAM RAM=256M, BAR=256M
[ 3.148741] [drm] RAM width 128bits DDR
[ 3.148858] [drm] radeon: 256M of VRAM memory ready
[ 3.148860] [drm] radeon: 512M of GTT memory ready.
[ 3.148875] [drm] GART: num cpu pages 131072, num gpu pages 131072
[ 3.149913] [drm] Possible lm63 thermal controller at 0x4c
[ 3.176566] [drm] radeon: 1 quad pipes, 2 z pipes initialized.
[ 3.178659] [drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
[ 3.178681] radeon 0000:01:00.0: WB enabled
[ 3.178685] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000010000000
[ 3.178843] radeon 0000:01:00.0: radeon: MSI limited to 32-bit
[ 3.178899] radeon 0000:01:00.0: radeon: using MSI.
[ 3.178926] [drm] radeon: irq initialized.
[ 3.178940] [drm] Loading R500 Microcode
[ 3.178993] radeon 0000:01:00.0: firmware: direct-loading firmware radeon/R520_cp.bin
[ 3.179566] [drm] radeon: ring at 0x0000000010001000
[ 3.179599] [drm] ring test succeeded in 9 usecs
[ 3.180159] [drm] ib test succeeded in 0 usecs
[ 3.180672] [drm] Radeon Display Connectors
[ 3.180673] [drm] Connector 0:
[ 3.180675] [drm] VGA-1
[ 3.180677] [drm] DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c
[ 3.180678] [drm] Encoders:
[ 3.180679] [drm] CRT1: INTERNAL_KLDSCP_DAC1
[ 3.180681] [drm] Connector 1:
[ 3.180682] [drm] SVIDEO-1
[ 3.180683] [drm] Encoders:
[ 3.180684] [drm] TV1: INTERNAL_KLDSCP_DAC2
[ 3.180685] [drm] Connector 2:
[ 3.180686] [drm] DVI-I-1
[ 3.180687] [drm] HPD1
[ 3.180689] [drm] DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c 0x7e5c
[ 3.180690] [drm] Encoders:
[ 3.180692] [drm] CRT2: INTERNAL_KLDSCP_DAC2
[ 3.180693] [drm] DFP1: INTERNAL_KLDSCP_TMDS1
[ 3.307629] [drm] fb mappable at 0xE00C0000
[ 3.307631] [drm] vram apper at 0xE0000000
[ 3.307632] [drm] size 7258112
[ 3.307633] [drm] fb depth is 24
[ 3.307634] [drm] pitch is 6912
[ 3.307724] fbcon: radeondrmfb (fb0) is primary device
[ 3.373459] radeon 0000:01:00.0: [drm] fb0: radeondrmfb frame buffer device
[ 3.385526] [drm] Initialized radeon 2.50.0 20080528 for 0000:01:00.0 on minor 0
[ 12.129986] systemd[1]: Starting Load Kernel Module drm...
[ 12.592802] systemd[1]: modprobe@drm.service: Succeeded.
[ 12.593181] systemd[1]: Finished Load Kernel Module drm.
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$ cat /var/log/Xorg.0.log
[ 49.234]
X.Org X Server 1.20.11
X Protocol Version 11, Revision 0
[ 49.234] Build Operating System: linux Debian
[ 49.234] Current Operating System: Linux Whynot 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64
[ 49.234] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.10.0-9-amd64 root=UUID=162cee0b-5766-48c9-bcde-3ea9a9670d38 ro quiet
[ 49.234] Build Date: 13 April 2021 04:07:31PM
[ 49.234] xorg-server 2:1.20.11-1 (https://www.debian.org/support)
[ 49.234] Current version of pixman: 0.40.0
[ 49.234] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 49.234] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 49.234] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Oct 22 17:13:16 2021
[ 49.235] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 49.235] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 49.235] (==) No Layout section. Using the first Screen section.
[ 49.235] (==) No screen section available. Using defaults.
[ 49.235] (**) |-->Screen "Default Screen Section" (0)
[ 49.235] (**) | |-->Monitor "<default monitor>"
[ 49.236] (==) No device specified for screen "Default Screen Section".
Using the first device section listed.
[ 49.236] (**) | |-->Device "AMD Graphics"
[ 49.236] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 49.236] (==) Automatically adding devices
[ 49.236] (==) Automatically enabling devices
[ 49.236] (==) Automatically adding GPU devices
[ 49.236] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 49.236] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 49.236] Entry deleted from font path.
[ 49.236] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/100dpi/:unscaled,
/usr/share/fonts/X11/75dpi/:unscaled,
/usr/share/fonts/X11/Type1,
/usr/share/fonts/X11/100dpi,
/usr/share/fonts/X11/75dpi,
built-ins
[ 49.236] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 49.236] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 49.236] (II) Loader magic: 0x555769e36e40
[ 49.236] (II) Module ABI versions:
[ 49.236] X.Org ANSI C Emulation: 0.4
[ 49.236] X.Org Video Driver: 24.1
[ 49.236] X.Org XInput driver : 24.1
[ 49.236] X.Org Server Extension : 10.0
[ 49.237] (++) using VT number 7
[ 49.237] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 49.238] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 49.244] (--) PCI:*(1@0:0:0) 1002:71c7:174b:0840 rev 158, Mem @ 0xe0000000/268435456, 0xfe8e0000/65536, I/O @ 0x0000d000/256, BIOS @ 0x????????/131072
[ 49.245] (--) PCI: (1@0:0:1) 1002:71e7:174b:0841 rev 158, Mem @ 0xfe8f0000/65536
[ 49.245] (II) LoadModule: "glx"
[ 49.245] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 49.246] (II) Module glx: vendor="X.Org Foundation"
[ 49.247] compiled for 1.20.11, module version = 1.0.0
[ 49.247] ABI class: X.Org Server Extension, version 10.0
[ 49.247] (II) LoadModule: "amdgpu"
[ 49.247] (II) Loading /usr/lib/xorg/modules/drivers/amdgpu_drv.so
[ 49.248] (II) Module amdgpu: vendor="X.Org Foundation"
[ 49.248] compiled for 1.20.9, module version = 19.1.0
[ 49.248] Module class: X.Org Video Driver
[ 49.248] ABI class: X.Org Video Driver, version 24.1
[ 49.248] (II) AMDGPU: Driver for AMD Radeon:
All GPUs supported by the amdgpu kernel driver
[ 49.248] (II) AMDGPU(0): [KMS] Kernel modesetting enabled.
[ 49.248] (EE) AMDGPU(0): amdgpu_device_initialize failed
[ 49.248] (II) AMDGPU(1): [KMS] Kernel modesetting enabled.
[ 49.248] (EE) AMDGPU(1): amdgpu_device_initialize failed
[ 49.248] (II) AMDGPU(G0): [KMS] Kernel modesetting enabled.
[ 49.249] (EE) AMDGPU(G0): amdgpu_device_initialize failed
[ 49.249] (EE) Screen 0 deleted because of no matching config section.
[ 49.249] (II) UnloadModule: "amdgpu"
[ 49.249] (EE) Screen 0 deleted because of no matching config section.
[ 49.249] (II) UnloadModule: "amdgpu"
[ 49.249] (EE) Device(s) detected, but none match those in the config file.
[ 49.249] (EE)
Fatal server error:
[ 49.249] (EE) no screens found(EE)
[ 49.249] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 49.249] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 49.249] (EE)
[ 49.253] (EE) Server terminated with error (1). Closing log file.