https://bugs.freedesktop.org/show_bug.cgi?id=99457
Bug ID: 99457
Summary: Excessive CPU load by the xorg-server and GUI's hard
lags
Product: xorg
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/Radeon
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Created attachment 129041
--> https://bugs.freedesktop.org/attachment.cgi?id=129041&action=edit
Xorg.0.log, /proc/cpuinfo, output of dmesg, lspci, dmidecode
Hi!
Sorry for my English.
I use vnc xorg-module for remote support users.
In September 2016 I have updated xorg-server, tigervnc, xf86-video-ati and
related packages.
Packages versions before updating:
xorg-server-1.17.4
xf86-video-ati-7.5.0
tigervnc-1.4.2-r2
Packages versions after updating:
xorg-server-1.18.4
xf86-video-ati-7.7.0
tigervnc-1.6.0-r2
I faced the problem of excessive CPU load by the xorg-server and GUI's hard
lags.
I found that disabling vnc module in xorg.conf eliminates the problem.
The problem occurs only with video cards AMD.
I recently noticed that the problem only occurs when monitor connected via DVI.
When monitor connected through VGA everything works as it should.
To date, kernel version 4.4.39, but different versions 4.4.6 - 4.4.39 have no
effect on the problem.
I tried version xf86-video-ati-7.8.0 and tigervnc-1.7.0 - the problem persists.
Distribution - Gentoo
The attachment files Xorg.0.log, /proc/cpuinfo, output of dmesg, lspci,
dmidecode.
There is a bug report for tigervnc:
https://github.com/TigerVNC/tigervnc/issues/401
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