as this just flips a switch on SKL it shouldn't require extensive regression testing on other hw
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1526220 Title: [SKL] Disable display power well Status in linux package in Ubuntu: Triaged Status in linux source package in Vivid: Triaged Status in linux source package in Wily: Triaged Bug description: Display power well can cause issues like blank screen when logging in after resume from suspend, so it's best to disable it for now like upstream did in v4.4-rc1: commit 1b0e3a049efe471c399674fd954500ce97438d30 Author: Imre Deak <[email protected]> Date: Thu Nov 5 23:04:11 2015 +0200 drm/i915/skl: disable display side power well support for now The display power well support on this platform is in a somewhat broken state atm, so disable it by default. This in effect will get rid of incorrect assert WARNs about the CSR/DMC firmware not being loaded during power well toggling. It also removes a problem during driver loading where a register is accessed while its backing power well is down, resulting in another WARN. Until we come up with the root cause of the second problem and the proper fix for both issues, keep all display side power wells on. Also clarify a bit the option description. Reported-by: Dave Airlie <[email protected]> Reference: http://mid.gmane.org/CAPM=9tyjbqjsbtka49crr6sykpnw7pq-fufznzz8y1snvvk...@mail.gmail.com Signed-off-by: Imre Deak <[email protected]> Reviewed-by: Ville Syrjälä <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected] Signed-off-by: Jani Nikula <[email protected]> To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1526220/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
