[nouveau] Xorg freeze / crashes with Dual GPU. 20.04/21.04

[JXT]

This is a rather huge issue and I'm not 100% if it's xorg or a kernel issue. I have tons of errors from the DE, Nouveau drivers and various other things. In 16.04.X and 18.04.X everything has worked fine. When I tried to upgrade to 20.04 setting up my screens either locks the machine up and causes all sorts of crazy issues (crashes pretty much anything that draws to screen). Testing 21.04.3 the issue persists. Issues also don't care if I'm running nouveau or proprietary, it merely changes various problems.

[ 14.405062] nouveau 0000:26:00.0: disp: outp 04:0006:0f41: training failed
[ 14.948769] nouveau 0000:26:00.0: DRM: wndw-0: timeout
[ 16.954561] nouveau 0000:26:00.0: DRM: core notifier timeout
[ 18.954601] nouveau 0000:26:00.0: DRM: wndw-2: timeout
[ 20.960380] nouveau 0000:26:00.0: DRM: core notifier timeout
[ 22.960428] nouveau 0000:26:00.0: DRM: wndw-4: timeout

[ 52.803952] nouveau 0000:26:00.0: disp: outp 04:0006:0f41: training failed
[ 52.853329] nouveau 0000:26:00.0: DRM: core notifier timeout

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: xorg 1:7.7+22ubuntu1
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: pass
CasperVersion: 1.461
CompositorRunning: None
CurrentDesktop: XFCE
Date: Wed Sep 1 06:28:49 2021
DistUpgraded: Fresh install
DistroCodename: hirsute
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GpuHangFrequency: Continuously
GpuHangReproducibility: Yes, I can easily reproduce it
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 NVIDIA Corporation GP106 [GeForce GTX 1060 6GB] [10de:1c03] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: ZOTAC International (MCO) Ltd. GP106 [GeForce GTX 1060 6GB] [19da:1438]
 NVIDIA Corporation TU116 [GeForce GTX 1660] [10de:2184] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: ZOTAC International (MCO) Ltd. TU116 [GeForce GTX 1660] [19da:5543]
LiveMediaBuild: Xubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
MachineType: Micro-Star International Co., Ltd MS-7C02
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/username.seed maybe-ubiquity quiet splash ---
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/22/2021
dmi.bios.release: 5.17
dmi.bios.vendor: American Megatrends International, LLC.
dmi.bios.version: 1.H5
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B450 TOMAHAWK (MS-7C02)
dmi.board.vendor: Micro-Star International Co., Ltd
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInternational,LLC.:bvr1.H5:bd04/22/2021:br5.17:svnMicro-StarInternationalCo.,Ltd:pnMS-7C02:pvr1.0:rvnMicro-StarInternationalCo.,Ltd:rnB450TOMAHAWK(MS-7C02):rvr1.0:cvnMicro-StarInternationalCo.,Ltd:ct3:cvr1.0:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7C02
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.104-1build1
version.libgl1-mesa-dri: libgl1-mesa-dri 21.0.1-2
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.11-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200714-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-1

[Daniel van Vugt (vanvugt)]

The kernel log messages shown here are a bug in the nouveau driver, which is not well supported. We recommend using the 'Additional Drivers' app to install one of the proprietary Nvidia drivers instead. If those cause "various problems" as you say then please open a separate bug about them.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[JXT (jtipton-x-deactivatedaccount)]

As I said the proprietary drivers don't work either on either 20.04 or 21.04. I will try to do another install and switch to the proprietary for another bug report shortly. I don't think there are any errors with the proprietary though, the system is just unusable if you enable the primary GPU screens. Window manager just crashes and runs a --replace constantly, laggy and stuttery. You can't actually launch applications on the enabled screens.

I've added the second bug report with the proprietary drivers as you said to. https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1942314

As a note I *can* launch applications on the primary GPU/Screens in some DE, some not at all. I noted the syntax is different in gnome but for example trying to launch in gnome will open the application but if I move it, resize, anything I get that fabulous trail of artifacting ala windows 95.