doctorsnorky, as per :
[0.129022] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
...
[ 83.372812] [drm] Wrong MCH_SSKPD value: 0x16040307
[ 83.372816] [drm] This can cause pipe underruns and display issues.
[ 83.372817] [drm] Please upgrade your BIOS to fix this.
Hence, as per
Apologies--first time posting bug, so please point me to relevant
instructions to be most helpful and/or if I need to file new bug. This
bug affects me too, and also exists in upstream kernel (3.12rc4).
** Changed in: linux (Ubuntu)
Status: Expired = Confirmed
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You received this bug
[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete = Expired
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https://bugs.launchpad.net/bugs/1238384
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.12 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
