After upgrading to: Linux svoboda 3.15.1-1-ARCH #1 SMP PREEMPT Tue Jun 17 09:32:20 CEST 2014 x86_64 GNU/Linux nouveau fails to suspend. The interesting dmesg lines are: [ 1408.108662] nouveau E[ PDISP][0000:01:00.0][0xc000917c][ffff8804261aab80] fini: 0xc2071088 [ 1408.108663] nouveau E[ PDISP][0000:01:00.0][0xc000917c][ffff8804261aab80] failed suspend, -16 I have one output connected, an active DisplayPort -> DVI adapter to drive my 27" 2560x1440 monitor. The card is a Quadro K2000M (NVE7 GK107). When I was on linux 3.14 using this adapter, suspend worked, but it would fail during resume - my display would not come back up, but restarting X would fix it. Unfortunately, I never captured the dmesg from that. The following two lines were present, however. [54004.956815] nouveau E[ PDISP][0000:01:00.0] DP:0006:0f42: failed to read DPCD [54004.958586] nouveau E[ PDISP][0000:01:00.0] DP:0006:0f42: link training failed
Created attachment 101448 [details] dmesg from 3.15
possible duplicate: https://bugs.freedesktop.org/show_bug.cgi?id=80013
eswanson@svoboda ~$ sudo cat /sys/kernel/debug/vgaswitcheroo/switch 0:DIS: :DynPwr:0000:01:00.0 1:IGD:+:Pwr:0000:00:02.0 I've always used bbswitch and multiple Xorg.conf files to manage my two GPUs, so I'm not sure how to interpret the above, but it doesn't look the same as in #80013.
Alright, after a long troubleshooting session assisted by imirkin on #nouveau, I tested the following configurations: v3.15 from Linus's github tree: suspends fine, but has the "3.14" error on resume linux-3.15.y from linux-stable tree: suspends fine, but has the "3.14" error on resume drm-fixes from airlied's tree: fails to boot (hangs after loading initrd and decrypting my drive, but before running anything on /. It may not be mounting root. I'm using btrfs, and I don't know what the mount line in console looks like for that fs.) drm-next from airlied's tree: works! no errors on suspend or resume.
Since drm-next which allegedly worked eventually went into 3.16, I'm assuming all's well here. If not, feel free to reopen with updated info.
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