For people hit by this bug, looking for a workaround: I reverted to the latest Ubuntu kernel from 15.04. It was still on my boot menu (my system was upgraded). The packages can be downloaded from here: http://packages.ubuntu.com/vivid-updates/kernel/
This is installed on my system: me@this:~$ dpkg -l "*3.19*" |grep ^ii ii linux-headers-3.19.0-31 3.19.0-31.36 all Header files related to Linux kernel version 3.19.0 ii linux-headers-3.19.0-31-generic 3.19.0-31.36 amd64 Linux kernel headers for version 3.19.0 on 64 bit x86 SMP ii linux-image-3.19.0-31-generic 3.19.0-31.36 amd64 Linux kernel image for version 3.19.0 on 64 bit x86 SMP ii linux-image-extra-3.19.0-31-generic 3.19.0-31.36 amd64 Linux kernel extra modules for version 3.19.0 on 64 bit x86 SMP (The headers are needed for e.g. Virtualbox). I changed the default booting kernel in /etc/default/grub: me@this:~$ diff /etc/default/grub.bak /etc/default/grub 6c6,7 < GRUB_DEFAULT=0 --- > #GRUB_DEFAULT=0 > GRUB_DEFAULT='1>Ubuntu, with Linux 3.19.0-31-generic' (Run update-grub after chaging the default kernel) I'll keep updating kernels waiting for the fix in 4.2, but this way my base system is sane. C. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1492764 Title: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in ips_enabled (expected 1, found 0) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1492764/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
