External displays - no output when hitting graphical target kernel 6.1.9 incl. MST patches
Brief summary of the problem:
External displays go to standby when the display manager (X server) is started.
This is with 6.1.9 including the MST patches (https://github.com/archlinux/linux/commits/v6.1.9-arch1)
Note that with kernel 6.2.0 rc5 + patches as of commit 5af6ce7049365952f7f023155234fe091693ead1, things are OK.
(didn't try later ones yet. Will try rc6 soon)
So it only seems to affect 6.1.x with those back-ported fixes.
Related issue #2171 (closed)
Hardware description:
Lenovo T14s Gen3 AMD with 2x Eizo EV2795 (daisy-chained, connected via USB-C)
System:
Kernel: 6.2.0-rc5-1-mo-rc+ arch: x86_64 bits: 64 compiler: gcc v: 12.2.1
Desktop: i3 v: 4.22 info: polybar vt: 7 dm: LightDM v: 1.32.0
Distro: Arch Linux
CPU:
Info: model: AMD Ryzen 7 PRO 6850U with Radeon Graphics bits: 64
type: MT MCP arch: Zen 3+ gen: 4 level: v3 note: check built: 2022
process: TSMC n6 (7nm) family: 0x19 (25) model-id: 0x44 (68) stepping: 1
microcode: 0xA404102
Topology: cpus: 1x cores: 8 tpc: 2 threads: 16 smt: enabled cache:
L1: 512 KiB desc: d-8x32 KiB; i-8x32 KiB L2: 4 MiB desc: 8x512 KiB
L3: 16 MiB desc: 1x16 MiB
Graphics:
Device-1: AMD Rembrandt [Radeon 680M] vendor: Lenovo driver: amdgpu
v: kernel arch: RDNA-2 code: Navi-2x process: TSMC n7 (7nm) built: 2020-22
pcie: gen: 4 speed: 16 GT/s lanes: 16 ports: active: DP-7,DP-8 off: eDP-1
empty: DP-1, DP-2, DP-3, DP-4, DP-5, DP-6, HDMI-A-1 bus-ID: 33:00.0
chip-ID: 1002:1681 class-ID: 0300 temp: 59.0 C
Device-2: Syntek Integrated Camera type: USB driver: uvcvideo
bus-ID: 5-1:2 chip-ID: 174f:1812 class-ID: fe01 serial: <filter>
Display: x11 server: X.Org v: 21.1.6 with: Xwayland v: 22.1.7 driver: X:
loaded: amdgpu dri: radeonsi gpu: amdgpu display-ID: :0 screens: 1
Screen-1: 0 s-res: 5120x1440 s-dpi: 96 s-size: 1354x381mm (53.31x15.00")
s-diag: 1407mm (55.38")
Monitor-1: DP-7 mapped: DisplayPort-6 pos: primary,right
model: EIZO NANAO EV2795 serial: <filter> built: 2020 res: 2560x1440 hz: 60
dpi: 109 gamma: 1.2 size: 597x336mm (23.5x13.23") diag: 685mm (27")
ratio: 16:9 modes: max: 2560x1440 min: 720x400
Monitor-2: DP-8 mapped: DisplayPort-7 pos: left model: EIZO NANAO EV2795
serial: <filter> built: 2020 res: 2560x1440 hz: 60 dpi: 109 gamma: 1.2
size: 597x336mm (23.5x13.23") diag: 685mm (27") ratio: 16:9 modes:
max: 2560x1440 min: 720x400
Monitor-3: eDP-1 mapped: eDP note: disabled model-id: CSO 0x1404
built: 2020 res: 2560x1440 dpi: 161 gamma: 1.2 size: 302x189mm (11.89x7.44")
diag: 356mm (14") ratio: 16:10 modes: max: 1920x1200 min: 640x480
API: OpenGL v: 4.6 Mesa 22.3.3 renderer: AMD Radeon Graphics (rembrandt
LLVM 15.0.7 DRM 3.49 6.2.0-rc5-1-mo-rc+) direct render: Yes
System information:
Arch Linux
Kernels: 6.1.9 (incl. MST patches)
Attached files:
Log files (for system lockups / game freezes / crashes)
Attached is a log with drm.debug=0x1ff (Booted, screens went to standby. Then pressed power button to shut down)
Edited by Mario Oenning