Screen freezes on Fedora 23, new system

[John Maheu]

I am getting random screen freezes in which the mouse still moves around
but the mouse button and keyboard do not work. If youtube is playing the
music continues on. Before a freeze everything works fine. It may work for
1 minute or 1 hour after a reboot and a freeze does not seem to depend on
what desktop application I am running.

When this happens I always see the following in the log files.

kernel: DMAR: DRHD: handling fault status reg 2
Jan 24 16:41:19 kernel: DMAR: INTR-REMAP: Request device [[00:00.1] fault
index 2b
                                                    INTR-REMAP:[fault
reason 38] Blocked an interrupt request due to source-id verification
failure
kernel: DMAR: INTR-REMAP: Request device [[00:00.0] fault index 27
                                                    INTR-REMAP:[fault
reason 38] Blocked an interrupt request due to source-id verification
failure
Jan 24 16:41:20 /usr/libexec/gdm-x-session[2491]: Successfully activated
service 'org.gnome.evolution.dataserver.Calendar7'
Jan 24 16:41:20 kernel: DMAR: DRHD: handling fault status reg 202
Jan 24 16:41:20 kernel: DMAR: INTR-REMAP: Request device [[00:00.1] fault
index 2b
                                                    INTR-REMAP:[fault
reason 38] Blocked an interrupt request due to source-id verification
failure

I can ssh in. I need to reboot to get things working again.

Any idea what this means and how to fix it?

The system is new:
Dell Precision Tower 7910
Dual Intel Xeon E5-2687W v3
64GB (8x8GB)
1TB SATA 7.2k
 AMD FirePro W4100 2GB (4 mDP)
 LSI SAS 3008

I'm using the standard X driver which is listed as RADEON
and under system details: Gallium 0.4 on AMD Cape Verde.

Thanks
John

[Greg Woods]

On Mon, Jan 25, 2016 at 7:34 AM, John Maheu <maheujm1(a)gmail.com&gt; wrote:

>  I need to reboot to get things working again. 

You can also hit ALT-F2 to get a command window, and type "r". This
restarts gnome-shell. This always works when I see this and doesn't require
you to close any windows, log out, or reboot.

I'd love to know why this happens, but it's infrequent enough that I just
do the "r" when it does.

--Greg

[John Maheu]

 ALT-F2 and "r" did not work.

On Mon, Jan 25, 2016 at 11:46 AM, Greg Woods <woods(a)ucar.edu&gt; wrote:

>  On Mon, Jan 25, 2016 at 7:34 AM, John Maheu <maheujm1(a)gmail.com&gt; wrote:
>
> > I need to reboot to get things working again.
>
>
>  You can also hit ALT-F2 to get a command window, and type "r". This
>  restarts gnome-shell. This always works when I see this and doesn't require
>  you to close any windows, log out, or reboot.
>
>  I'd love to know why this happens, but it's infrequent enough that I just
>  do the "r" when it does.
>
>  --Greg
>
>
>  --
>  users mailing list
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[Greg Woods]

On Mon, Jan 25, 2016 at 10:55 AM, John Maheu <maheujm1(a)gmail.com&gt; wrote:

>  ALT-F2 and "r" did not work. 

Then although the symptoms are the same, you have a different issue than I
do.

--Greg

[stan]

On Mon, 25 Jan 2016 12:55:48 -0500
John Maheu <maheujm1(a)gmail.com&gt; wrote:

>   ALT-F2 and "r" did not work.
>  
>  On Mon, Jan 25, 2016 at 11:46 AM, Greg Woods <woods(a)ucar.edu&gt; wrote:
>  
>  >
>  > On Mon, Jan 25, 2016 at 7:34 AM, John Maheu <maheujm1(a)gmail.com&gt;
>  > wrote:
>  >
>  >> I need to reboot to get things working again.
>  >
>  >
>  > You can also hit ALT-F2 to get a command window, and type "r". This
>  > restarts gnome-shell. This always works when I see this and doesn't
>  > require you to close any windows, log out, or reboot.
>  >
>  > I'd love to know why this happens, but it's infrequent enough that
>  > I just do the "r" when it does.
>  >
>  > --Greg
>  >
>  >
>  > --
>  > users mailing list
>  > users(a)lists.fedoraproject.org
>  > To unsubscribe or change subscription options:
>  > https://admin.fedoraproject.org/mailman/listinfo/users
>  > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
>  > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
>  > Have a question? Ask away: http://ask.fedoraproject.org
>  >
>  > 
If the keyboard is working at all, you should be able to use the magic
sysreq keys.
http://www.howtogeek.com/119127/use-the-magic-sysrq-key-on-linux-to-fix-f...

It's possible that there is a complete kernel panic, and nothing is
running, so the keyboard and mouse are unavailable.  The fact that the
mouse pointer moves and music continues to play makes this unlikely.
That couldn't happen unless instructions were being processed by the
CPU.  What if you unplug and plug in the mouse?  Does it start working
properly?

Did you try Ctrl-Alt-F2 to reach a virtual console?  When in X, the
virtual consoles are only reachable via the Ctrl-Alt-F2 version.  Once
you are in a virtual console, you can look at the X logs, examine
journalctl -r or check processes that are suspended.  You can even kill
the X server, and restart it if you have to.

If you get no joy, try a different kernel, or downgrade X to an earlier
version.  It is likely that either the video driver or the X version is
having a race condition, and locking up.  I use the radeon driver on an
older amd video card and have no issues at all, so it might be that
your card is newer and not as well supported.

If all else fails, search at https://bugzilla.redhat.com/ for bugs that
have your problem (say 'X freeze' or 'radeon'), and add your comments,
and check for workarounds, or open a new bug describing your problem.
Open it against X, even though it could be other things.

[John Maheu]

Ctrl-Alt-F2 does not work but I can ssh into the box. Once there everything
looks fine. Log files only really show DMAR: INTR-REMAP problem. I have
restarted gnome but it comes back with a screen flicker and very slow mouse
and keyboard movements. Only way to recover fully is a reboot.

While playing a youtube video today I had a freeze and I could use the
mouse click to start and stop the video but I could do nothing else.

I have tried Ctrl-Alt-SysRq with no luck. Have not tried the other
combinations you linked to.

Perhaps the Firepro is not supported with these kernels I've used. I did
see a post with it working with kernel 4.3 on Debian unstable.

Thanks for the suggestions.
John


>  If the keyboard is working at all, you should be able to use the
> magic
>  sysreq keys.
>
>
> http://www.howtogeek.com/119127/use-the-magic-sysrq-key-on-linux-to-fix-f...
>
>  It's possible that there is a complete kernel panic, and nothing is
>  running, so the keyboard and mouse are unavailable.  The fact that the
>  mouse pointer moves and music continues to play makes this unlikely.
>  That couldn't happen unless instructions were being processed by the
>  CPU.  What if you unplug and plug in the mouse?  Does it start working
>  properly?
>
>  Did you try Ctrl-Alt-F2 to reach a virtual console?  When in X, the
>  virtual consoles are only reachable via the Ctrl-Alt-F2 version.  Once
>  you are in a virtual console, you can look at the X logs, examine
>  journalctl -r or check processes that are suspended.  You can even kill
>  the X server, and restart it if you have to.
>
>  If you get no joy, try a different kernel, or downgrade X to an earlier
>  version.  It is likely that either the video driver or the X version is
>  having a race condition, and locking up.  I use the radeon driver on an
>  older amd video card and have no issues at all, so it might be that
>  your card is newer and not as well supported.
>
>  If all else fails, search at https://bugzilla.redhat.com/ for bugs that
>  have your problem (say 'X freeze' or 'radeon'), and add your comments,
>  and check for workarounds, or open a new bug describing your problem.
>  Open it against X, even though it could be other things.
>  --
>  users mailing list
>  users(a)lists.fedoraproject.org
>  To unsubscribe or change subscription options:
>  https://admin.fedoraproject.org/mailman/listinfo/users
>  Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
>  Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
>  Have a question? Ask away: http://ask.fedoraproject.org
>