Bug 205879
| Summary: | amdgpu: blank screen on RX 460 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Bjoern Franke (bjo) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | RESOLVED INVALID | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 5.4.3 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
dmesg 5.4.3
xorg log dmesg with amdgpu.dc_log=1 |
||
Xorg logs:
21.247] (WW) AMDGPU(0): No outputs definitely connected, trying again...
[ 21.247] (II) AMDGPU(0): Output DisplayPort-0 disconnected
[ 21.247] (II) AMDGPU(0): Output HDMI-A-0 disconnected
[ 21.247] (II) AMDGPU(0): Output DVI-D-0 disconnected
[ 21.247] (WW) AMDGPU(0): Unable to find connected outputs - setting 1024x768 initial framebuffer```
Created attachment 286319 [details]
xorg log
Created attachment 286321 [details]
dmesg with amdgpu.dc_log=1
Enabling dc_log=1 shows similarities to #200695, but only with one monitor connected via HDMI.
[ 19.548801] [drm:drm_client_modeset_probe [drm]] No connectors reported connected with modes
[ 19.548809] [drm:drm_client_modeset_probe [drm]] connector 56 enabled? no
[ 19.548816] [drm:drm_client_modeset_probe [drm]] connector 60 enabled? no
[ 19.548823] [drm:drm_client_modeset_probe [drm]] connector 64 enabled? no
[ 19.548831] [drm:drm_client_modeset_probe [drm]] Not using firmware configuration
[ 19.548838] [drm:drm_client_modeset_probe [drm]] picking CRTCs for 16384x16384 config
[ 19.548841] [drm] Cannot find any crtc or sizes
Issue was caused by a loose connection. Reinserted the HDMI cable and all is fine again. |
Created attachment 286317 [details] dmesg 5.4.3 With a recent upgrade on Arch Linux, a bug came back which existed also several versions before. Starting lightdm just results in a blank screen and switching to a terminal also fails then. Booting with dc=0 works.