Request for explanation of error message

[Oliver Grawert]

hi,
Am Montag, den 29.07.2019, 06:12 +0800 schrieb Bret Busby:
> 
> > > 
> > > "
> > > bret at bret-MD34045-2521:~$ sudo head -25 /var/log/lightdm/x-0.log
> > > 
> > > X.Org X Server 1.19.6
> > > Release Date: 2017-12-20
> > > X Protocol Version 11, Revision 0
> > > Build Operating System: Linux 4.4.0-148-generic x86_64 Ubuntu
> > > Current Operating System: Linux bret-MD34045-2521 4.15.0-55-
> > > generic
> > > #60-Ubuntu SMP Tue Jul 2 18:22:20 UTC 2019 x86_64
> > > Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-55-generic
> > > root=UUID=1d3945d6-b596-4d57-8151-d2eef48a56b8 ro quiet splash
> > > vt.handoff=1
> > > Build Date: 03 June 2019  08:10:35AM
> > > xorg-server 2:1.19.6-1ubuntu4.3 (For technical support please see
> > > http://www.ubuntu.com/support)
> > > Current version of pixman: 0.34.0
> > > 	Before reporting problems, check http://wiki.x.org
> > > 	to make sure that you have the latest version.
> > > Markers: (--) probed, (**) from config file, (==) default
> > > setting,
> > > 	(++) from command line, (!!) notice, (II) informational,
> > > 	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
> > > (==) Log file: "/var/log/Xorg.0.log", Time: Mon Jul 29 03:29:50
> > > 2019
> > > (==) Using system config directory "/usr/share/X11/xorg.conf.d"
> > > xf86EnableIOPorts: failed to set IOPL for I/O (Operation not
> > > permitted)
> > > _XSERVTransSocketUNIXAccept: accept() failed
> > > _XSERVTransSocketUNIXAccept: accept() failed
> > > _XSERVTransSocketUNIXAccept: accept() failed
> > > _XSERVTransSocketUNIXAccept: accept() failed
> > > _XSERVTransSocketUNIXAccept: accept() failed
> > > _XSERVTransSocketUNIXAccept: accept() failed
> > > _XSERVTransSocketUNIXAccept: accept() failed
> > > "
> > > 
> > > that last line is an endless loop.
> > 
...
> Thanks to #openbsd's epony and oldlaptop, the resolution is to:
> 
... on openbsd ... which you are not running ;)

(and in general it is a bad idea to randomly change system defaults
while you are debugging an issue *only you* seem to have ... this
indicates that something you changed actually broke it ... this is
rarely caused by a system config everyone else uses too)

the error indicates that there are some broken file permissions ... 

what type of graphical session do you run ...

could it be that you ran some graphical app (for example a file
manager) as root that was not designed for this (so it changed the
permissions of a (potentially hidden) file to be only root readable
while it is normally used/written to by a user) ... 

do you have an ~/.xinitrc in your home dir ?

did you ever edit /etc/X11/xorg.xonf (either manually or by using a
tool like nvidia-config)

do you have any third party stuff installed from a PPA or elsewhere
that could have replaced system libs or apps in a broken way ... (note
that .deb packages give their creator 100% root access to your system,
installing foreign packages is always a matter of trust here (this is
why snap packages exist btw))

ciao
	oli
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 181 bytes
Desc: This is a digitally signed message part
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20190729/e0f3ba24/attachment.sig>