| Summary: | [Regression linux 5.1-rc1] Displayport 1.2 tty second monitor corruption | ||||||||
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| Product: | DRI | Reporter: | Sibren Vasse <freedesktop> | ||||||
| Component: | DRM/AMDgpu | Assignee: | Default DRI bug account <dri-devel> | ||||||
| Status: | RESOLVED FIXED | QA Contact: | |||||||
| Severity: | normal | ||||||||
| Priority: | medium | CC: | david.francis, freedesktop, nicholas.kazlauskas | ||||||
| Version: | unspecified | ||||||||
| Hardware: | x86-64 (AMD64) | ||||||||
| OS: | Linux (All) | ||||||||
| Whiteboard: | |||||||||
| i915 platform: | i915 features: | ||||||||
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David/Nicolas, since this is a regression in 5.1, please make sure it's fixed by 5.1 final (expected to happen in ~5 weeks). Created attachment 143838 [details] [review] 0001-drm-amd-display-If-one-stream-full-updates-full-upda.patch Does the attached patch help resolve the issue you're seeing? I have applied your patch to v5.1-rc3 and can confirm it solves the issue. Thank you! |
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Created attachment 143781 [details] Bisect log & result I have two monitors daisy chained via Displayport 1.2. GPU: Radeon RX 570 4GB amdgpu.dc=1 (issue does not occur when disabled) After upgrading to Linux 5.1-rc1 when switching to a tty the second monitor (that's connected to the first) displays a corrupted version of the first monitor. Previously this would display a stretched version of monitor 1 (because of a different aspect ratio). There is no output in dmesg when switching to a tty. I have bisected the issue between tags v5.0 and v5.1-rc1. The result was bc7f670ee04cd619f8c4627c37d77b3618bc5edd as the first bad commit. Bisect log attached. commit 8a48b44cd00f10e83f573b9028d11bd90a36de26 GOOD commit bc7f670ee04cd619f8c4627c37d77b3618bc5edd BAD After switching from graphical environment to a tty, the second monitor will keep displaying the last frame of the graphical environment. commit b2e85302494a6b7d3a3006c8d80a729377600628 BAD Screen display is corrupted.