https://bugzilla.kernel.org/show_bug.cgi?id=221714
Bug ID: 221714
Summary: AMDGPU: Firmware issue on Teros TE-2476G monitor
causes black screen/instability with FreeSync and
invalid EDID.
Product: Drivers
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: Video(DRI - non Intel)
Assignee: [email protected]
Reporter: [email protected]
Regression: No
Description:
The Teros TE-2476G monitor (23.8" 144Hz) fails to properly initialize on the
amdgpu driver. The monitor firmware appears to report a null serial number
(00000000) and fails to negotiate high refresh rates (144Hz) when FreeSync is
active. This results in intermittent black screens or a fallback to 60Hz.
System Info:
GPU: AMD Radeon RX 580
Driver: amdgpu
Kernel: 7.1.2-3-cachyos
Distribution: Arch Linux / CachyOS
Steps to reproduce:
Connect Teros TE-2476G via DisplayPort.
Enable default FreeSync/VRR settings.
System fails to consistently maintain 144Hz link or causes display signal
loss.
Workaround:
The issue is mitigated by disabling FreeSync via kernel parameter
(amdgpu.freesync_video=0) and forcing the monitor mode using
video=DP-1:1920x1080@144 in the bootloader command line.
Expected behavior:
The amdgpu driver should handle the monitor's invalid EDID gracefully or
provide a "quirk" to ignore the missing serial number and allow stable 144Hz
operation without requiring manual cmdline overrides.
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