Xorg crash on 3d-enabled virgl (Haswell host)

[Alexander E. Patrakov]

I am running a KVM virtual machine with 3D acceleration (virgl). The host is Arch Linux, the guest is Ubuntu 18.04. However, recently, the session started crashing just after the login. In xorg logs, I see this:

[ 15.338] (WW) modeset(0): Page flip failed: Invalid argument
[ 15.338] (EE) modeset(0): present flip failed
[ 15.397] (WW) modeset(0): Page flip failed: Invalid argument
[ 15.397] (EE) modeset(0): present flip failed
[ 15.418] (WW) modeset(0): Page flip failed: Invalid argument
[ 15.419] (EE) modeset(0): present flip failed
[ 15.440] (WW) modeset(0): Page flip failed: Invalid argument
[ 15.440] (EE) modeset(0): present flip failed
[ 15.460] (WW) modeset(0): Page flip failed: Invalid argument
[ 15.460] (EE) modeset(0): present flip failed
[ 15.975] (WW) modeset(0): Page flip failed: Invalid argument
[ 15.976] (EE) modeset(0): present flip failed
[ 16.039] (WW) modeset(0): Page flip failed: Invalid argument
[ 16.040] (EE) modeset(0): present flip failed
[ 16.064] (WW) modeset(0): Page flip failed: Invalid argument
[ 16.064] (EE) modeset(0): present flip failed
[ 16.096] Failed to compile FS: 0:11(2): error: `color0' undeclared
0:11(2): error: value of type vec4 cannot be assigned to variable of type error
0:12(2): error: `color1' undeclared
0:12(2): error: value of type vec4 cannot be assigned to variable of type error

[ 16.096] Program source:
#ifdef GL_ES
precision mediump float;
#endif
#define ATLAS_DIM_INV 0.000976562500000000
varying vec2 glyph_pos;
uniform vec4 fg;
uniform sampler2D atlas;
void main() {
       vec4 mask = texture2D(atlas, glyph_pos);
       vec4 source = fg;
      color0 = source * mask;
      color1 = source.a * mask;
}
[ 16.096] (EE)
Fatal server error:
[ 16.096] (EE) GLSL compile failure

Downgrading libgl1-mesa-dri from 19.0.2-1ubuntu1.1~18.04.1 to 18.0.0~rc5-1ubuntu1 helps.

Arch on Arch does not fail this way. Mesa version is 19.1.1-1 there.

On the host, the GPU is Intel Haswell:

00:02.0 VGA compatible controller [0300]: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller [8086:0412] (rev 06)

The CPU is Intel(R) Core(TM) i7-4770S CPU.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-54.58-generic 4.15.18
Uname: Linux 4.15.0-54-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Tue Jul 16 20:52:03 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DpkgLog:

ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
 Red Hat, Inc. Virtio GPU [1af4:1050] (rev 01) (prog-if 00 [VGA controller])
   Subsystem: Red Hat, Inc. Virtio GPU [1af4:1100]
Lsusb: Error: command ['lsusb'] failed with exit code 1:
MachineType: QEMU Standard PC (Q35 + ICH9, 2009)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no username)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-54-generic root=UUID=4fa5252e-51d1-476f-8903-e4d8b7266af0 ro splash quiet vt.handoff=1
SourcePackage: xorg
Symptom: display
Title: Xorg crash
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/01/2014
dmi.bios.vendor: SeaBIOS
dmi.bios.version: 1.12.0-20181126_142135-anatol
dmi.chassis.type: 1
dmi.chassis.vendor: QEMU
dmi.chassis.version: pc-q35-4.0
dmi.modalias: dmi:bvnSeaBIOS:bvr1.12.0-20181126_142135-anatol:bd04/01/2014:svnQEMU:pnStandardPC(Q35+ICH9,2009):pvrpc-q35-4.0:cvnQEMU:ct1:cvrpc-q35-4.0:
dmi.product.name: Standard PC (Q35 + ICH9, 2009)
dmi.product.version: pc-q35-4.0
dmi.sys.vendor: QEMU
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.97-1ubuntu1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 19.0.2-1ubuntu1.1~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

[Daniel van Vugt (vanvugt)]

Before we debug anything here, one of your packages is broken, which might be relevant:

  libgl1-mesa-dri 18.0.0~rc5-1ubuntu1

It should be version 19. To fix this please run:

  sudo apt update
  sudo apt full-upgrade

If that doesn't fix it then download and install the missing package:

  https://launchpad.net/ubuntu/+archive/primary/+files/libgl1-mesa-dri_19.0.2-1ubuntu1.1~18.04.1_amd64.deb

and reboot.

[Daniel van Vugt (vanvugt)]

Oh, you said that downgrade was a workaround.

So in that case this sounds like a bug in libgl1-mesa-dri_19.0.2-1ubuntu1.1~18.04.1_amd64.deb

[Timo Aaltonen (tjaalton)]

please test 19.0.8 from ppa:ubuntu-x-swat/updates

[Alexander E. Patrakov (patrakov-gmail)]

It works.

[Timo Aaltonen (tjaalton)]

excellent, that version is on the SRU queue already, waiting for review