Public bug reported:
I've noticed after installing Ubuntu 14.04 on a Richland APU desktop,
that this critical DPM issue has still not been fixed. DPM needs to be
disabled by default like in kernel 3.14 for these systems so that the
live CD or desktop session does not instantly reboot the machine. I was
able to bypass it by editing the grub.cfg on the bootable flash drive
and adding radeon.dpm=0 to the boot options, along with cding to
/target/etc/default and editing grub with the same change before
rebooting after installation to bypass it.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1297464
Title:
Kernel 3.13 still broken on Radeon HD 6000-based desktops.
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