Bug 16172

Summary:	sharevts option creates xserver instance which uses 100% cpu load
Product:	xorg	Reporter:	Pete Beardmore <elbeardmorez>
Component:	Input/Keyboard	Assignee:	Xorg Project Team <xorg-team>
Status:	RESOLVED DUPLICATE	QA Contact:	Xorg Project Team <xorg-team>
Severity:	normal
Priority:	medium
Version:	git
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Pete Beardmore 2008-05-30 14:47:11 UTC

There are numerous reports of this on the web from people attempting 'multiseat' setups.

Somebody else's steps to repreoduce issue.. http://bugs.archlinux.org/task/5754?opened=1436&status%5B0%5D=

https://lists.ubuntu.com/archives/dapper-changes/2006-April/009108.html addresses a 'sharevts cpu load' issue and I was wondering whether it's possible that only ubuntu's xserver package got that patch?

For me to reproduce the issue I can just go to init 3 on my fedora box and issue:

X -sharevts -novtswitch -config xorg2.conf :2

The -novtswitch appears to do nothing.

This issue was evident in xorg 7.3, and today I pulled the xorg git to see if it had been addressed. It hasn't.

The concept of 100% cpu usage.. ..interesting because as I use my compositing manager on 'xserver instance 1'.. that process sits at around 60% beneath the 'xserver instance 2' which is simultaneously taking 100%' ..it's taking 100% 'apparantly'.. ..but it doesn't seem to be crippling xserver instance 1 at all.

Comment 1 Pete Beardmore 2008-05-30 15:59:50 UTC

'vignatti' on the irc channel just told me that they had already traced this bug back to the kbd input driver..

..'use evdev instead'.. ..and i did, it worked, and I'm happy!

I'll leave it to someone with more authority to decide whether the bug is declared obsolete etc.

Comment 2 Daniel Stone 2009-08-31 21:10:41 UTC


*** This bug has been marked as a duplicate of bug 13063 ***

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