Using the latest 4.4.0 kernel, I can now boot. But only with nvidia
graphics card enabled. Intel graphics is still broken.
Backlight function keys are still not working. I have tried various
combinations of:
acpi_osi=Linux acpi_backlight=native
acpi_osi=Linux acpi_backlight=vendor
etc
with no luck.
ian@wallyworld:~$ apt-cache policy linux-image-4.4.0
linux-image-4.4.0-0-generic:
Installed: 4.4.0-0.12
Candidate: 4.4.0-0.12
Version table:
*** 4.4.0-0.12 0
500 http://ppa.launchpad.net/canonical-kernel-team/unstable/ubuntu/
xenial/main amd64 Packages
100 /var/lib/dpkg/status
linux-image-4.4.0-040400-generic:
Installed: 4.4.0-040400.201601101930
Candidate: 4.4.0-040400.201601101930
Version table:
*** 4.4.0-040400.201601101930 0
100 /var/lib/dpkg/status
linux-image-4.4.0-0-lowlatency:
Installed: (none)
Candidate: 4.4.0-0.12
Version table:
4.4.0-0.12 0
500 http://ppa.launchpad.net/canonical-kernel-team/unstable/ubuntu/
xenial/main amd64 Packages
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https://bugs.launchpad.net/bugs/1533221
Title:
Booting with intel graphics enabled results in a lockup
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