[F24] Screen Blank/Garbled After Suspend

[Dolphykins]

I have an EliteBook 8440p with an NVidia NVS 3100M running Fedora 24 w/ Nouveau drivers (Gallium 0.4 on NVA8). When the laptop wakes from suspend, the screen is stuck on a blank, white picture. Changing TTY's causes the image to become garbled and flicker across the screen, however the login screen or TTY is barely recognizable through the mess.

I have tried using the Nvidia proprietary driver and confirmed it fixes this particular issue, however the vast number of other issues brought up by using the Nvidia driver is preventing me from using it. (Switches TTY after boot after a few mins, generally ugly boot process, driver crashes after a couple days, suspend on lid close doesn't work, and kernel updates brick the driver entirely).

I also replaced the LCD in the laptop with a spare to rule out the issue being related to a faulty LCD. I came from Fedora 23, upgraded to Fedora 24, and have the latest updates from repos installed and the issue has persisted since first installing Fedora.

[EDIT]: When resuming from suspend with an external monitor connected, the picture on the external monitor is ok, however the laptop LCD is stuck blank. I was able to capture some log output using "journalctl -f" on the second monitor. Attached is the output given.
This seems to be a common issue that I have been unable to find any resolution for online, aside from "Install Nvidia". These are some additional links to other forum posts detailing the exact issue:
http://superuser.com/questions/10570...raining-failed
https://bbs.archlinux.org/viewtopic.php?id=197388

[Dolphykins]

The issue is still present and I haven't been able to find a fix yet. I noticed when I switch TTY's, the one I was logged into before suspending starts filling up with "Link Training Failed".

This is the output of dmesg when switching TTY's and the main LCD isn't able to recover from the blank white screen:
[ 253.725178] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link training failed
[ 253.964581] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link training failed
[ 253.965611] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link not trained before attach
[ 262.074933] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link training failed
[ 262.081719] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link training failed
[ 262.082749] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link not trained before attach
[ 264.091618] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link training failed
[ 264.318266] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link training failed
[ 264.319290] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link not trained before attach
[ 270.115821] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link training failed
[ 270.122646] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link training failed
[ 270.123698] nouveau 0000:01:00.0: disp: outp 00:0006:0344: link not trained before attach

[Madtiger]

I found a bug report that is just like what your dealing with. You might want to have a look at it and see what they have to say.

https://bugs.freedesktop.org/show_bug.cgi?id=91954

I know how frustrating this must be for you and I hope you get it figured out soon.

David

[Dolphykins]

Thanks, I added onto the Bugzilla thread with details for my case. Looks like they got the issue resolved as of 4.5 for that particular setup, however I'm still running into it on 4.6.3

[Dolphykins]

This issue is still occurring and has not been resolved yet.

Fedora 24, latest updates, Gnome and LXDE both experience issue, along with login screen.
GDM 3.20.1
Nouveau running on 4.8.7-200.fc24.x86_64