| Summary: | X fails to start on QEMU/KVM with cirrus KMS since 3.19-rc | ||
|---|---|---|---|
| Product: | DRI | Reporter: | Takashi Iwai <tiwai> |
| Component: | DRM/other | Assignee: | Default DRI bug account <dri-devel> |
| Status: | RESOLVED INVALID | QA Contact: | |
| Severity: | normal | ||
| Priority: | medium | ||
| Version: | unspecified | ||
| Hardware: | Other | ||
| OS: | All | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
Hi, Freedesktop's Bugzilla instance is EOLed and open bugs are about to be migrated to http://gitlab.freedesktop.org. To avoid migrating out of date bugs, I am now closing all the bugs that did not see any activity in the past year. If the issue is still happening, please create a new bug in the relevant project at https://gitlab.freedesktop.org/drm (use misc by default). Sorry about the noise! |
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X modesetting driver fails to start with cirrus KMS on QEMU/KVM since 3.19-rc. The culprit is the commit 8975626ea35adcca561f8a81dedccfbc5dd8ec72 drm/cirrus: allow 32bpp framebuffers for cirrus drm Reverting this commit makes X working again. X modesetting driver seems to try to open 1024x768x32 graphics, where the pitch is 4096 and greater than max_pitch (4088) defined in cirrus_check_framebuffer(). And it doesn't fall back to 24bpp as the patch expected. Tested with 3.19-rc7 with qemu 2.1 -vga cirrus option.