Thank you for your bug report. The log has [ 12.559830] Call Trace: [ 12.559838] __video_do_ioctl+0x1a7/0x410 [videodev] [ 12.559844] video_usercopy+0x2b5/0x670 [videodev] [ 12.559848] ? v4l_s_fmt+0x670/0x670 [videodev] [ 12.559854] video_ioctl2+0x15/0x20 [videodev] [ 12.559859] v4l2_ioctl+0x4c/0x60 [videodev] [ 12.559863] do_vfs_ioctl+0x407/0x670 [ 12.559865] ? putname+0x4a/0x50 [ 12.559866] ksys_ioctl+0x67/0x90 [ 12.559868] __x64_sys_ioctl+0x1a/0x20 [ 12.559870] do_syscall_64+0x57/0x190 [ 12.559873] entry_SYSCALL_64_after_hwframe+0x44/0xa9
Looks like it"s rather a kernel driver issue ** Package changed: xorg (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1874543 Title: Artifacts when connected to an external 4K display To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1874543/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
