Bug 435502 – x11-drivers/xf86-video-intel-2.20.7 display freeze/scramble EQ Overflowing

• Product: Gentoo Linux
• Status: RESOLVED NEEDINFO

[Description Gerhard Hintermayer 2012-09-19 11:49:49 UTC]

On a sna enabled Xserver sometimes I get a freeze of X11 display, just before Characters in Terminal are scrambled.
In Xorg.log I see:
[   183.223] [mi] EQ overflowing.  Additional events will be discarded until existing events are processed.
[   183.223]
[   183.223] Backtrace:
[   183.224] 0: /usr/bin/X (xorg_backtrace+0x4a) [0x81cb35a]
[   183.224]
[   183.224] [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack.
[   183.224] [mi] mieq is *NOT* the cause.  It is a victim.
[   184.397] [mi] EQ overflow continuing.  100 events have been dropped.
[   184.397]
[   184.397] Backtrace:
[   184.398] 0: /usr/bin/X (xorg_backtrace+0x4a) [0x81cb35a]
[   184.398]
[   185.027] [mi] EQ overflow continuing.  200 events have been dropped.
[   185.027]
[   185.027] Backtrace:
[   185.027] 0: /usr/bin/X (xorg_backtrace+0x4a) [0x81cb35a]
[   185.028]

happens also with 2.20.8

Reproducible: Didn't try

Steps to Reproduce:
my 1st thought, don't know if it is real cause
1. open popup which contains unicode small zero \u2080 and quiver some window at same time using tcl/tk
2. after that for some secs buttons under mouse get scrambled
3. typing in Terminal makes strange characters, then freeze :-(
4. have to kill -9 
Actual Results:  
X freezes, have to kill -9

Expected Results:  
no X crash/freeze

Portage 2.1.11.9 (default/linux/x86/10.0/desktop, gcc-4.5.4, glibc-2.15-r2, 3.3.8-gentoo i686)
=================================================================
System uname: Linux-3.3.8-gentoo-i686-Intel-R-_Core-TM-2_Duo_CPU_P8800_@_2.66GHz-with-gentoo-2.1
Timestamp of tree: Wed, 19 Sep 2012 00:45:01 +0000
ccache version 3.1.7 [enabled]
app-shells/bash:          4.2_p37
dev-java/java-config:     2.1.11-r3
dev-lang/python:          2.6.8, 2.7.3-r2, 3.1.5, 3.2.3
dev-util/ccache:          3.1.7
dev-util/cmake:           2.8.8-r3
dev-util/pkgconfig:       0.27.1
sys-apps/baselayout:      2.1-r1
sys-apps/openrc:          0.9.8.4
sys-apps/sandbox:         2.5
sys-devel/autoconf:       2.13, 2.68
sys-devel/automake:       1.9.6-r3, 1.10.3, 1.11.6
sys-devel/binutils:       2.22-r1
sys-devel/gcc:            4.5.4
sys-devel/gcc-config:     1.7.3
sys-devel/libtool:        2.4-r1
sys-devel/make:           3.82-r3
sys-kernel/linux-headers: 3.1 (virtual/os-headers)
sys-libs/glibc:           2.15-r2
Repositories: gentoo science zugaina x-portage
ACCEPT_KEYWORDS="x86"
ACCEPT_LICENSE="* -@EULA"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=core2 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /var/bind /var/lib/hsqldb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.3/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cli-php5.3/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -march=core2 -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FCFLAGS="-O2 -march=i686 -pipe"
FEATURES="assume-digests binpkg-logs ccache config-protect-if-modified distlocks ebuild-locks fixlafiles news parallel-fetch parse-eapi-ebuild-head protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch"
FFLAGS="-O2 -march=i686 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="en"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/var/lib/layman/science /var/lib/layman/zugaina /usr/local/portage"
SYNC="rsync://localhost:1873/gentoo-portage"
USE="X a52 aac acl acpi alsa apache2 apng berkdb bluetooth branding bzip2 cairo cdda cdr cli consolekit cracklib crypt cups cxx dbus dri dts dv dvb dvd dvdr emboss encode exif extensions extras fam ffmpeg firefox flac fortran gd gdbm gif gimp gnome gnutls gpm gstreamer gtk hddtemp iconv ieee1394 ipv6 jpeg lcms ldap libkms libnotify lm_sensors mad mng modules mp3 mp4 mpeg mudflap mysql ncurses nls nntp nptl nptlonly nsplugin objc ogg opengl openmp pam pango pcre pdf png policykit postgres ppds pppd python qt3support quicktime readline sdl session sna spell sqlite3 ssl startup-notification svg tcl tcpd theora threads thunar tiff truetype udev udisks unicode upower usb vaapi vorbis wxwidgets x264 x86 xcb xcomposite xml xv xvid xvmc zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_ftp proxy_http rewrite setenvif so speling status suexec unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="X usblcd lcd2usb" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en" PHP_TARGETS="php5-3" PYTHON_TARGETS="python3_2 python2_7" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" VIDEO_CARDS="intel fbdev" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON

[Comment 1 Chí-Thanh Christopher Nguyễn 2012-09-19 13:05:50 UTC]

So this happens with sna and not with uxa? On both xorg-server-1.12 and 1.13?

[Comment 2 Gerhard Hintermayer 2012-09-19 13:10:29 UTC]

(In reply to comment #1)
> So this happens with sna and not with uxa? On both xorg-server-1.12 and 1.13?

cannot try 1.13 because of dependancy of tigervnc (not available in portage for xorg-server 1.13 yet)
try to check with uxa and will reply ...

[Comment 3 Chí-Thanh Christopher Nguyễn 2012-09-19 13:34:08 UTC]

This is happening while tigervnc is active or not (ie. its xorg module is loaded)? If yes, your issue might be similar to bug 381123.

[Comment 4 Gerhard Hintermayer 2012-09-19 13:41:07 UTC]

(In reply to comment #2)
> (In reply to comment #1)
> > So this happens with sna and not with uxa? On both xorg-server-1.12 and 1.13?
> 
> cannot try 1.13 because of dependancy of tigervnc (not available in portage
> for xorg-server 1.13 yet)
> try to check with uxa and will reply ...

Definitely not reproducable with uxa.

The problem seems to be the unicode character (subscript zero) in the popup.
I display something like "F\u2080 smaller than 20 and therefore\ncomment required"

with sna I only see "F\ncomment required"

with uxa the message is displayed correct.

thats weird ...

[Comment 5 Gerhard Hintermayer 2012-09-19 13:45:05 UTC]

(In reply to comment #3)
> This is happening while tigervnc is active or not (ie. its xorg module is
> loaded)? If yes, your issue might be similar to bug 381123.

The tigervnc module is loaded, but no VNC connection to screen.
regarding to 381123 it might be interesting to try with sna, but unfortunately I didn't find some time for that yet.

[Comment 6 Rémi Cardona (RETIRED) 2012-11-28 21:19:56 UTC]

Please try reproducing the issue without the tigervnc module loaded, as its mere presence might trigger weird bugs.

It could help pinpointing the underlying bug.

Thanks