Bug 7262 - Xvnc warnings "EQ overflowing"
Summary: Xvnc warnings "EQ overflowing"
Status: NEW
Alias: None
Product: ThinLinc
Classification: Unclassified
Component: VNC (show other bugs)
Version: trunk
Hardware: PC Unknown
: P2 Normal
Target Milestone: LowPrio
Assignee: Pierre Ossman
Depends on:
Reported: 2018-10-17 09:28 CEST by Peter Åstrand
Modified: 2018-10-30 12:27 CET (History)
1 user (show)

See Also:
Acceptance Criteria:

xinit.log from tl.cendio.se (17.44 KB, text/plain)
2018-10-17 09:28 CEST, Peter Åstrand

Description Peter Åstrand cendio 2018-10-17 09:28:04 CEST
Samuel managed to get this when running x11clone through a ThinLinc session:

(EE) [mi] EQ overflowing.  Additional events will be discarded until existing events are processed.
(EE) Backtrace:
(EE) 0: /opt/thinlinc/libexec/Xvnc (xorg_backtrace+0x3f) [0x5e264f]
(EE) 1: /opt/thinlinc/libexec/Xvnc (mieqEnqueue+0x253) [0x5ccd83]
(EE) 2: /opt/thinlinc/libexec/Xvnc (QueuePointerEvents+0x52) [0x5aa812]
(EE) 3: /opt/thinlinc/libexec/Xvnc (vncPointerMove+0x5b) [0x5fe8cb]
(EE) 4: /opt/thinlinc/libexec/Xvnc (_ZN14XserverDesktop12pointerEventERKN3rfb5PointEi+0x3d) [0x5fae8d]
(EE) 5: /opt/thinlinc/libexec/Xvnc (_ZN3rfb10SMsgReader16readPointerEventEv+0xc1) [0x614961]
(EE) 6: /opt/thinlinc/libexec/Xvnc (_ZN3rfb16VNCSConnectionST15processMessagesEv+0x82) [0x61c972]
(EE) 7: /opt/thinlinc/libexec/Xvnc (_ZN14XserverDesktop17handleSocketEventEiPN7network12SocketServerEbb+0xee) [0x5fb82e]
(EE) 8: /opt/thinlinc/libexec/Xvnc (_ZN14XserverDesktop17handleSocketEventEibb+0x9f) [0x5fb8ff]
(EE) 9: /opt/thinlinc/libexec/Xvnc (0x400000+0x1f99e9) [0x5f99e9]
(EE) 10: /opt/thinlinc/libexec/Xvnc (WakeupHandler+0x6d) [0x597f3d]
(EE) 11: /opt/thinlinc/libexec/Xvnc (WaitForSomething+0x219) [0x5e0099]
(EE) 12: /opt/thinlinc/libexec/Xvnc (Dispatch+0x9d) [0x59393d]
(EE) 13: /opt/thinlinc/libexec/Xvnc (main+0x3ae) [0x4a7dae]
(EE) 14: /lib64/libc.so.6 (__libc_start_main+0xfd) [0x3aab41ed1d]
(EE) 15: /opt/thinlinc/libexec/Xvnc (0x400000+0xa9783) [0x4a9783]

In this case, we has changing screen resolution through the GNOME settings interface.
Comment 1 Peter Åstrand cendio 2018-10-17 09:28:43 CEST
Created attachment 894 [details]
xinit.log from tl.cendio.se
Comment 2 Pierre Ossman cendio 2018-10-30 12:27:28 CET
This is actually not a crash, but a warning that the X server is failing to keep up with the flow of events (mouse events in this case). It suggests that something is not giving the Xorg core enough CPU cycles.

Let's keep this around for a while and see if we see more of this and clues as to what is triggering it.

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