| Summary: |
Monitor not recognized after upgrading to a Radeon RX 480 |
| Product: |
DRI
|
Reporter: |
Damien Grassart <damien> |
| Component: |
DRM/AMDgpu | Assignee: |
Default DRI bug account <dri-devel> |
| Status: |
RESOLVED
MOVED
|
QA Contact: |
|
| Severity: |
major
|
|
|
| Priority: |
medium
|
CC: |
damien, mezcalbert
|
| Version: |
DRI git | |
|
| Hardware: |
Other | |
|
| OS: |
All | |
|
| Whiteboard: |
|
|
i915 platform:
|
|
i915 features:
|
|
|---|
| Attachments: |
|
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.
Created attachment 126413 [details] /sys/class/drm/card0-DP-2/edid I upgraded my video card from a Radeon HD 8770 to a Radeon RX 480 after which my monitor stopped working. I believe it is an EDID problem since dmesg contains this repeated 4 times: [ +0.120622] [drm:drm_edid_block_valid [drm]] *ERROR* EDID checksum is invalid, remainder is 128 [ +0.000011] Raw EDID: [ +0.000005] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ +0.000004] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ +0.000005] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ +0.000004] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ +0.000005] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ +0.000005] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ +0.000004] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ +0.000005] ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff As well as: [ +0.000005] amdgpu 0000:01:00.0: DP-2: Ignoring invalid EDID block 1. [ +0.149608] amdgpu 0000:01:00.0: No connectors reported connected with modes xrandr shows this error message when I run it: "xrandr: Output DisplayPort-1 is not disconnected but has no modes". I can actually get the monitor working by manually adding a mode: $ cvt 2560 1440 # 2560x1440 59.96 Hz (CVT 3.69M9) hsync: 89.52 kHz; pclk: 312.25 MHz Modeline "2560x1440_60.00" 312.25 2560 2752 3024 3488 1440 1443 1448 1493 -hsync +vsync $ xrandr --newmode "2560x1440" 312.25 2560 2752 3024 3488 1440 1443 1448 1493 -hsync +vsync $ xrandr --addmode DisplayPort-1 2560x1440 I've attached the /sys/class/drm/card0-DP-2/edid file if that is helpful. Please let me know if I can provide anything else.