** Also affects: linux (Ubuntu Disco)
Importance: Undecided
Status: New
** Also affects: mutter (Ubuntu Disco)
Importance: Undecided
Status: New
** Also affects: linux-hwe (Ubuntu Disco)
Importance: Undecided
Status: New
** Changed in: linux-hwe (Ubuntu Disco)
Status: New => Triaged
** Changed in: linux-hwe (Ubuntu Disco)
Status: Triaged => Invalid
** Changed in: mutter (Ubuntu Disco)
Status: New => Invalid
** Changed in: linux (Ubuntu Disco)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1832138
Title:
Login screen never appears on vmwgfx using bionic kernel 4.15
Status in linux package in Ubuntu:
Invalid
Status in linux-hwe package in Ubuntu:
Invalid
Status in mutter package in Ubuntu:
Invalid
Status in linux source package in Bionic:
In Progress
Status in linux-hwe source package in Bionic:
Fix Released
Status in mutter source package in Bionic:
In Progress
Status in linux source package in Disco:
Fix Released
Status in linux-hwe source package in Disco:
Invalid
Status in mutter source package in Disco:
Invalid
Status in linux source package in Eoan:
Invalid
Status in linux-hwe source package in Eoan:
Invalid
Status in mutter source package in Eoan:
Invalid
Bug description:
[Impact]
With most recent version of mutter installed.
If running kernel is in the 4.15 serie (using the vmwgfx video kernel driver)
and if the login screen uses wayland, then the login prompt doesn't appears.
All we see is the purple background with ubuntu in white at the bottom, nothing
else.
The vmwgfx driver in kernels prior to 4.17 reported bogus timestamps using
the wrong clock. This would lead us to wait forever (or at least 49 years)
before rendering the next frame. There's no decisive way to know this kernel
bug is going to happen before it does so just detect timestamps which are
obviously going to cause freezes and ignore them.
[Test case]
1) Use Virtualbox or VMware ESxi (if you have the infra)
1.1) [virtualbox] Make sure in the VM setting that the display uses 'VMSVGA'
which will force the OS to pick 'vmwgfx' video kernel driver. You can confirm
with 'lspci -nnvv' command.
2) Deploy a VM with Ubuntu 18.04.1 (which come w/ 4.15)
4) apt-get dist-upgrade
5) Reboot
with 4.15 it will fails
with hwe kernel 4.18 it will work as expected. # workaround
[Potential regression]
Low, it should fix vmwgfx and stop using the wrong clock.
A test kernel (pre-sru) has been made available to impact users for
them to test and conclude it works. It does work as expected, and no
regression has been found during the pre-sru testing phase.
As per commit description:
"
This should be transparent to to user space, as long as it doesn't
compare the time against the result of gettimeofday().
"
[Other informations]
upstream fix:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.2-rc5&id=37efe80ce85f
[Original description]
I'm running Ubuntu 18.04.2 desktop in a virtual machine under VMWare
Fusion Pro V11.1.0 on MacOS Mojave 10.14.5, all on a 15inch 2018
Macbook Pro.
I've been running this Ubuntu 18.04.2 VM without problem for many months
without problem.
Yesterday, I did 'sudo apt update; sudo apt upgrade'. Upon rebooting, the
system hangs immediately after displaying the splash screen. I never see a
login screen. And I can't use Ctrl+Alt+F2 to navigate to a console/tty login.
I can SSH into the system however.
I've found that I can work around the hang/freeze if I uncomment the
following line in /etc/gdm3/custom.conf;
#WaylandEnable=false
After uncommenting the WaylandEnable=false line and rebooting, then I
see the login prompt as expected and I can then log in and use the
system normally again.
After the 'apt upgrade' my system is running linux kernel 4.15.0-51,
as shown in this 'uname -a' output;
Linux ubuntuvm1 4.15.0-51-generic #55-Ubuntu SMP Wed May 15 14:27:21
UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
lsb_release -a output;
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-51.55-generic 4.15.18
Uname: Linux 4.15.0-51-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CompositorRunning: None
Date: Sun Jun 9 12:38:37 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GpuHangFrequency: This is the first time
GraphicsCard:
VMware SVGA II Adapter [15ad:0405] (prog-if 00 [VGA controller])
Subsystem: VMware SVGA II Adapter [15ad:0405]
InstallationDate: Installed on 2018-05-06 (399 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: VMware, Inc. VMware Virtual Platform
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-51-generic
root=/dev/mapper/ubuntu--vg-root ro splash net.ifnames=0
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/13/2018
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 6.00
dmi.board.name: 440BX Desktop Reference Platform
dmi.board.vendor: Intel Corporation
dmi.board.version: None
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd04/13/2018:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
dmi.product.name: VMware Virtual Platform
dmi.product.version: None
dmi.sys.vendor: VMware, Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.95-1~18.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.8-0ubuntu0~18.04.2
version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.8-0ubuntu0~18.04.2
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
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
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