http://bugzilla.opensuse.org/show_bug.cgi?id=962535 Bug ID: 962535 Summary: ksplashqml stuck when logging into kde5 after update to kernel-4.4 Classification: openSUSE Product: openSUSE Tumbleweed Version: 2015* Hardware: x86-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-maintainers@forge.provo.novell.com Reporter: vbabka@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- As requested, here's a bug report for the problem I'm currently trying to solve with upstream devs. Since kernel 4.4 I'm unable to login to kde5 desktop (on openSUSE Tumbleweed). There's a screen with progressbar showing the startup, which normally fades away after reaching 100%. But with kernel 4.4, the progress gets stuck somewhere between 1/2 and 3/4 (not always the same). Turns out that the process that's stuck is "ksplashqml" and when I switch to text console and kill it, I see that everything has actually started up, just the progressbar screen was obscuring it. Bisecting the kernel between 4.3 and 4.4 leads to: # first bad commit: [4dfd64862ff852df7b1198d667dda778715ee88f] drm: Use vblank timestamps to guesstimate how many vblanks were missed I can confirm that 4.4 works if I revert the following commits: 5b5561b3660db734652fbd02b4b6cbe00434d96b "drm/radeon: Fixup hw vblank counter/ts for new drm_update_vblank_count() (v2)" fa4270d8e0257b4b76f11baa2866f4313d29aaf5 "drm: Don't zero vblank timestamps from the irq handler" 235fabe09b46469adad2c9e4cb0563758155187c "drm: Add DRM_DEBUG_VBL()" 4dfd64862ff852df7b1198d667dda778715ee88f "drm: Use vblank timestamps to guesstimate how many vblanks were missed" 8e36f9d33c134d5c6448ad65b423a9fd94e045cf "drm/amdgpu: Fixup hw vblank counter/ts for new drm_update_vblank_count() (v3)" All clean reverts, just needs some fixup on top to use abs() instead of abs64() due to 79211c8ed19c055ca105502c8733800d442a0ae6. The radeon card is "CAICOS" with 1GB memory. Further details appear in upstream thread http://comments.gmane.org/gmane.linux.kernel/2127512 -- You are receiving this mail because: You are on the CC list for the bug.