Request for explanation of error message
Mike Marchywka
marchywka at hotmail.com
Sun Jul 28 22:37:19 UTC 2019
On Mon, Jul 29, 2019 at 06:12:15AM +0800, Bret Busby wrote:
> On 29/07/2019, Mike Marchywka <marchywka at hotmail.com> wrote:
> > On Mon, Jul 29, 2019 at 05:06:16AM +0800, Bret Busby wrote:
> >> On 29/07/2019, Paul Smith <paul at mad-scientist.net> wrote:
> >> > On Mon, 2019-07-29 at 04:14 +0800, Bret Busby wrote:
> >> >> > The first one is simple enough. It might have been because your disk
> >> >> > is full, in which case it's a symptom not a cause. What are the
> >> >> > permissions on these files? Run this command:
> >> >> >
> >> >> > ls -ald /tmp /tmp/.tX0-lock
> >> >> >
> >> >> > and let us know the results.
> >> >>
> >> >> "
> >> >> bret at bret-MD34045-2521:~$ ls -ald /tmp /tmp/.tX0-lock
> >> >> ls: cannot access '/tmp/.tX0-lock': No such file or directory
> >> >> drwxrwxrwt 19 root root 4096 Jul 29 03:57 /tmp
> >> >
> >> > This looks correct. That most likely means that this error is a
> >> > symptom of your disk being full, and not the cause of the problem.
> >> >
> >> > After you have cleared out space on your disk, please keep an eye on
> >> > the size of the /var/log/lightdm/x-0.log file. If it continues to
> >> > grow, send along the last 50 or so lines of output from that file and
> >> > we'll see what it has to say.
> >> >
> >>
> >> I have posted a message, that is awaiting moderation - a few kB too large.
> >>
> >> If you look at this output;
> >>
> >> "
> >> 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.
> >
> > If googling the IOPL error did not work there is stuff like this too,
> >
> > http://openbsd-archive.7691.n7.nabble.com/XSERVTransSocketUNIXAccept-accept-failed-td366623.html
> >
> > you could lsof and grep for the process, check what it has open, or just
> > make the changes and see what happens.
> >
>
> At
> http://openbsd-archive.7691.n7.nabble.com/XSERVTransSocketUNIXAccept-accept-failed-td366623.html
> is
>
> "
> Thanks to #openbsd's epony and oldlaptop, the resolution is to:
>
> 1. increase daemon openfiles-max to 2048 and openfiles-cur to 1024 in
> /etc/login.conf
> 2. cap_mkdb /etc/login.conf
> 3. re-login.
>
> Thanks
> "
>
> However, ...
>
> "
> bret at bret-MD34045-2521:~$ sudo cat /etc/login.conf
> [sudo] password for bret:
> cat: /etc/login.conf: No such file or directory
>
> "
>
>
> > I guess you could itry " ps ax -f | grep lightdm " and see if it is root or
> > has the right user for any needed permissions.
> >
>
> "
> bret at bret-MD34045-2521:~$ ps ax -f | grep lightdm
> root 1256 1 0 03:29 ? SLsl 0:00 /usr/sbin/lightdm
> root 1269 1256 2 03:29 tty7 Ssl+ 3:34 /usr/lib/xorg/Xorg
> -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7
> -novtswitch
> root 1458 1256 0 03:29 ? Sl 0:00 lightdm --session-child 13 20
> bret 15899 5719 0 06:07 pts/0 S+ 0:00 grep --color=auto lightdm
> bret at bret-MD34045-2521:~$
> "
>
> I do not understand the output.
Well, it is running as root. If googling did not work, you could see if
it managed to open anything. For example,
sudo netstat -anp | grep lightdm
unix 3 [ ] STREAM CONNECTED 24081 1191/lightdm
unix 2 [ ] DGRAM 28837 1332/lightdm
unix 3 [ ] STREAM CONNECTED 27936 1191/lightdm
unix 3 [ ] STREAM CONNECTED 24319 1332/lightdm
unix 3 [ ] STREAM CONNECTED 26915 1191/lightdm
with or without the wc,
sudo lsof | grep lightdm | wc
There are only two error messages...
I guess I'd still start in single user mode, try to start it by hand.
/usr/sbin/lightdm
or try to start X by hand and see what happens.
I was just through this with openbox trying to get 'Beaver to run
on old emachines. There were a bunch of little things I think playing
with xinit or something similar. It finally ran but can't remember
what happened.
>
>
> >
> > I guess it managed to write a few lines before even with "no" disk space :)
> >
>
> No - the file was only about 130MB - that was created after the reboot.
>
> Now, about an hour after running the rm command against the file, the
> software still has not found a way to get around it, and I have not
> yet lost any more free space.
>
> --
> Bret Busby
> Armadale
> West Australia
> ..............
>
> "So once you do know what the question actually is,
> you'll know what the answer means."
> - Deep Thought,
> Chapter 28 of Book 1 of
> "The Hitchhiker's Guide to the Galaxy:
> A Trilogy In Four Parts",
> written by Douglas Adams,
> published by Pan Books, 1992
>
> ....................................................
>
> --
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--
mike marchywka
306 charles cox
canton GA 30115
USA, Earth
marchywka at hotmail.com
404-788-1216
ORCID: 0000-0001-9237-455X
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