Bug 82801
| Summary: | broken DP on 3.16 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Rob Clark (robdclark) |
| Component: | Video(DRI - Intel) | Assignee: | Jani Nikula (jani.nikula) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | intel-gfx-bugs |
| Priority: | P3 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 3.16 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | dmesg w/ drm.debug=15 | ||
ok, small correction.. was having some monitor issues. DP *does* light up (but still with the attached WARN_ON() splat) (In reply to Rob Clark from comment #0) > Created attachment 147351 [details] > dmesg w/ drm.debug=15 Rob, although DRM_DEBUG is there, I'm not seeing any DRM_DEBUG_KMS or DRM_DEBUG_DRIVER output. Please check your debug parameter. Also I'm not too interested in the core stuff, so drm.debug=14 should be sufficient. (In reply to Jani Nikula from comment #2) > (In reply to Rob Clark from comment #0) > > Created attachment 147351 [details] > > dmesg w/ drm.debug=15 > > Rob, although DRM_DEBUG is there, I'm not seeing any DRM_DEBUG_KMS or > DRM_DEBUG_DRIVER output. Please check your debug parameter. Also I'm not too > interested in the core stuff, so drm.debug=14 should be sufficient. The intel_dump_pipe_config() traces are all DRM_DEBUG_KMS().. fwiw, these traces are from 'dmesg' (rather than console or anything that should be filtered by loglevel). I don't have access to that setup today, so if you need anything more, or want me to try something, I'll have to do that tomorrow. Presumed fixed by commit 8c875fca1a8d76665c60fa141c220cee65f44f5e Author: Ville Syrjälä <ville.syrjala@linux.intel.com> Date: Fri Sep 12 15:46:29 2014 +0300 drm/i915: Add limited color range readout for HDMI/DP ports on g4x/vlv/chv in v3.17-rc6. Please reopen if the problem persists. |
Created attachment 147351 [details] dmesg w/ drm.debug=15 observed on thinkpad t500. Fails to light up external DP, with the following warning: mismatch in limited_color_range (expected 1, found 0) dmesg attached