| Priority | medium |
|---|---|
| Bug ID | 76531 |
| Assignee | dri-devel@lists.freedesktop.org |
| Summary | linux-3.14-rc7 radeon/nouveau runtime-suspend never coming back |
| Severity | normal |
| Classification | Unclassified |
| OS | Linux (All) |
| Reporter | bonbons67@internet.lu |
| Hardware | Other |
| Status | NEW |
| Version | XOrg CVS |
| Component | DRM/other |
| Product | DRI |
Most recent testing: 3.14-rc7 mainline. As suggested on IRC by imirkin, returning -EBUSY instead of -EINVAL from nouveau_pmops_runtime_suspend() avoids driver to fall too far to the ground. When returning -EINVAL connectors get being seen as "disconnected" and there is no way to get them connected anymore. When returning -EBUSY the connectors stay functional but DE (enlightenment) complains about missing crtc and all that is visible is black background and a cursor that response to mouse/trackpad. Way to reproduce: Have xorg running, then for each avtive output call: xrandr --output $OUTPUT --off When last output got marked off runtime-suspend kicks in. Same/similar behavior has been observed on radeon (I don't remember the exact kernel releases, but older ones got console to display when switching VTs while newer failed to do so).
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