| Summary: | Panic in i915kms on power mode change | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Base System | Reporter: | Juan Ramón Molina Menor <info> | ||||
| Component: | kern | Assignee: | freebsd-bugs (Nobody) <bugs> | ||||
| Status: | Closed Overcome By Events | ||||||
| Severity: | Affects Only Me | CC: | amd64 | ||||
| Priority: | --- | ||||||
| Version: | CURRENT | ||||||
| Hardware: | amd64 | ||||||
| OS: | Any | ||||||
| Attachments: |
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Created attachment 170587 [details] Picture of the panic While testing the freebsd-base-graphics/drm-next-4.6 branch with a Haswell (HD 4400) GPU laptop, changing the power mode (plugging or unplugging the power cord) leads to instant panic, while with the drm-next-3.9 branch, switching AC/battery modifies backlight value up and down without issues. To reproduce: # kldload drm2 # sysctl dev.drm.skip_ddb=1 # kldload i915kms [plug / unplug the power cord (the result is exactly the same)] panic: IMPLEMENT ME …then the backtrace (attached image).