Public bug reported:
I guess the title is pretty much self-explanatory.
The issue has been discovered while connecting EVDI-backed device
(https://github.com/DisplayLink/evdi) with a running Xorg session and led to
filing of https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1870512
However, fixing the issue with SW cursor is only a partial solution in that
case, as sticking to SW cursor can potentially hinder performance.
I am aware of this (dix/dispatch.c):
update_desktop_dimensions();
/*
* We cannot register the Screen PRIVATE_CURSOR key if cursors are already
* created, because dix/privates.c does not have relocation code for
* PRIVATE_CURSOR. Once this is fixed the if() can be removed and we can
* register the Screen PRIVATE_CURSOR key unconditionally.
*/
if (!dixPrivatesCreated(PRIVATE_CURSOR))
dixRegisterScreenPrivateKey(&cursorScreenDevPriv, pScreen,
PRIVATE_CURSOR, 0);
return i;
}
as well as several other similar places in Xorg's code. Question is: how big
effort would it be to actually fix this?
Should this be reported/consulted with the upstream directly maybe?
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xserver-xorg-core 2:1.20.7-2ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-21.25-generic 5.4.27
Uname: Linux 5.4.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 3 12:45:07 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
Intel Corporation 4th Gen Core Processor Integrated Graphics Controller
[8086:0416] (rev 06) (prog-if 00 [VGA controller])
Subsystem: Dell 4th Gen Core Processor Integrated Graphics Controller
[1028:060d]
Subsystem: Dell GK107GLM [Quadro K1100M] [1028:060d]
InstallationDate: Installed on 2020-03-30 (4 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200329)
MachineType: Dell Inc. Dell Precision M3800
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-21-generic
root=UUID=1b7a03b4-95ff-4d1b-9897-848a0dc6f8b9 ro quiet splash vt.handoff=7
SourcePackage: xorg-server
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/25/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: Dell Precision M3800
dmi.board.vendor: Dell Inc.
dmi.board.version: A12
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias:
dmi:bvnDellInc.:bvrA12:bd05/25/2018:svnDellInc.:pnDellPrecisionM3800:pvrA12:rvnDellInc.:rnDellPrecisionM3800:rvrA12:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Dell Precision M3800
dmi.product.sku: Dell Precision M3800
dmi.product.version: A12
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.100-4
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.2-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20190815-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
** Affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal ubuntu
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg-server in Ubuntu.
https://bugs.launchpad.net/bugs/1870524
Title:
fallback to SW cursor on GPU hotplug
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1870524/+subscriptions
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