Bug 114601
| Summary: | Kernel 4.5.0 crashes when docking Lenovo T450s (with external monitor connected) | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | cs_gon |
| Component: | Video(DRI - Intel) | Assignee: | intel-gfx-bugs (intel-gfx-bugs) |
| Status: | RESOLVED INVALID | ||
| Severity: | high | CC: | intel-gfx-bugs |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 4.5.0 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | dmesg output with drm.debug=0x1e | ||
I also reported the bug on bugs.freedesktop.org ( https://bugs.freedesktop.org/show_bug.cgi?id=94534 ), because I wasn't sure where the best place to report this is. And I also tested the drm-intel-nightly kernel (linux-image-4.5.0-994-generic_4.5.0-994.201603132257_amd64.deb from the Ubuntu kernel PPA), which causes the same crash (apart from the addresses the exact same stack trace). Please file new drm/i915 bug reports to the freedesktop.org bugzilla: https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel |
Created attachment 209111 [details] dmesg output with drm.debug=0x1e When docking the T450s into the docking station (Lenovo Pro Dock) with an external monitor connected, the kernel frequently crashes. I have enabled kernel crash dumps and drm.debug=0x1e, and at least got the dmesg output. But I currently don't have the debugging symbols (the kernel is from the Ubuntu mainline PPA), so cannot provide a full backtrace at the moment. Please let me know if this is needed. And is compiling with CONFIG_DEBUG_INFO=y enough, or are additional steps needed?