I just installed kernel 4.4.0-23.41 from xenial-proposed and it seems to include whatever alleviated this issue. My laptop isn't crashing anymore.
There is the occasional glitch: sometimes when I enter my password at the login screen, the screen will actually not redraw at stay at the login screen while the contents seem to have changed. Moving my mouse cursor actually changes the cursor depending on what should be underneath. Switching to anther VT and back to X.org redraws the screen and fixes it. Also the title bar sometimes gets garbled. Moving or resizing the window fixes that. I did h experience these issues with 4.6 too, by the way. All in all, it's definitely usable this way! -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1569383 Title: Intel HD Graphics 530 crashes on glxinfo in MSHYBRID mode Status in xserver-xorg-video-intel package in Ubuntu: Incomplete Bug description: On my laptop (Clevo P650RA) with Skylake / Intel Core i7 6700HQ with Intel HD Graphics 530 IGP and a nvidia GTX965M DGP, glxinfo crashes when running in IGP mode, The laptop uses Optimus / MSHYBRID technology to be able to utilize both IGP and DGP. After setup I install nvidia-361 driver, which will make the system run using DGP mode by default. Using prime-select intel I can switch to using the IGP. After logging out and in again, the IGP is being used. However, when doing certain tasks, the system will crash. Running glxinfo is one of them. Another one is: cat /proc/acpi/bbswitch In addition, it sometimes seemingly at random, probably when some kind of desktop effect is performed. It seems that some kind of interaction with ACPI / IGP will make it crash. This is running Kubuntu 16.04 Xenial Beta 2. Some version numbers: Kernel version (uname -r): 4.4.0-18-generic linux-image-4.4.0-18-generic: 4.4.0-18.34 xserver-xorg-core: 2:1.18.3-1ubuntu2 xserver-xorg-video-intel: 2:2.99.917+git20160325-1ubuntu1 sddm: 0.13.0-1ubuntu5 plasma-desktop: 4:5.5.4-0ubuntu1 lsb_release -a: Distributor ID: Ubuntu Description: Ubuntu Xenial Xerus (development branch) Release: 16.04 Codename: xenial I'll attach a kern.log and a Xorg.0.log from a Intel IGP session on this laptop. Please let me know if I should provide other information, and how to collect this after a full system freeze. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1569383/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

