Hi all, I'm experiencing some issues with my desktop environment, quite hard to track down so I'm reporting it here. Basically, the most repeatable issue happens with xscreensaver (using 5.22): usign xscreensaver-demo to browse thru hacks I'm able to lock the xscreenaver-demo itself. Running it under gdb I can send a sigint and get a backtrace where it stopped: Program received signal SIGINT, Interrupt. 0x00007ffff57bc69a in waitpid () from /lib64/libpthread.so.0 (gdb) bt #0 0x00007ffff57bc69a in waitpid () from /lib64/libpthread.so.0 #1 0x00000000004170cd in kill_preview_subproc (s=s@entry=0x7fffffffd1f0, reset_p=reset_p@entry=0) at ./demo-Gtk.c:3924 #2 0x00000000004172e8 in launch_preview_subproc (s=0x7fffffffd1f0) at ./demo-Gtk.c:3989 #3 update_subproc_timer (data=0x7fffffffd1f0, data@entry=<error reading variable: value has been optimized out>) at ./demo-Gtk.c:4139 #4 0x00007ffff65e389b in g_timeout_dispatch (source=source@entry=0x922ab0, callback=<optimized out>, user_data=<optimized out>) at gmain.c:4026 #5 0x00007ffff65e2d85 in g_main_dispatch (context=0x670990) at gmain.c:2715 #6 g_main_context_dispatch (context=context@entry=0x670990) at gmain.c:3219 #7 0x00007ffff65e30b8 in g_main_context_iterate (context=0x670990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3290 #8 0x00007ffff65e34a2 in g_main_loop_run (loop=0x903110) at gmain.c:3484 #9 0x00007ffff76ca777 in gtk_main () from /usr/lib64/libgtk-x11-2.0.so.0 #10 0x000000000040a8ee in main (argc=1, argv=0x7fffffffd908) at ./demo-Gtk.c:5349 However, I'm seeing other issues in DE, like some artifacts when moving windows (not always) or flash crashing randomly even if I don't changed flash or browsers and secondary screen gone mad after suspend/resume). So this make me wonder if I got some issue in some lib, driver or xorg itself. Even some hint about where to start digging would be really appreciated. Reproducible: Always x11-base/xorg-server-1.14.2 x11-libs/gtk+-3.6.3-r2 dev-libs/glib-2.34.3 x11-misc/xscreensaver-5.22 calvin ~ # emerge --info Portage 2.2.0_alpha188 (default/linux/amd64/13.0/desktop/kde, gcc-4.7.3, glibc-2.17, 3.10.1 x86_64) ================================================================= System uname: Linux-3.10.1-x86_64-Intel-R-_Core-TM-_i5-3427U_CPU_@_1.80GHz-with-gentoo-2.2 KiB Mem: 8095348 total, 1332224 free KiB Swap: 8386556 total, 8386556 free Timestamp of tree: Fri, 19 Jul 2013 05:45:01 +0000 ld ld di GNU (GNU Binutils) 2.23.1 app-shells/bash: 4.2_p45 dev-java/java-config: 2.2.0 dev-lang/python: 2.7.5-r1, 3.2.5-r1, 3.3.2-r1 dev-util/cmake: 2.8.11.1 dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.11.8 sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.9.6-r3, 1.11.6, 1.12.6, 1.13.4, 1.14 sys-devel/binutils: 2.23.1 sys-devel/gcc: 4.7.3 sys-devel/gcc-config: 1.8 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.9 (virtual/os-headers) sys-libs/glibc: 2.17 Repositories: gentoo rion overlay Installed sets: @kde ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -mtune=native -O2 -pipe " CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/easy-rsa /usr/share/gnupg/qualified.txt /usr/share/polkit-1/actions /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=native -mtune=native -O2 -pipe " DISTDIR="/usr/portage/distfiles" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="it_IT.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j4" 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/rion /usr/overlay" SYNC="rsync://rsync.de.gentoo.org/gentoo-portage" USE="3dnow 3dnowext 3dnowprefetch X \ a52 aac aalib acl acpi aim alsa amd64 apng ares asf ati audio audiofile avahi bash-completion berkdb bidi bl bluetooth branding bri bzip2 cairo caps ccdda cdda cdr cjk cli consolekit cracklib crypt cups curl cxx dba dbus declarative device-mapper dga divx divx4linux dparanoia dri dts dv dvb dvd dvdr dvdread eap-sim edl embedded emboss encode ethereal exif expat faad fam fame fbcon ffmpeg fftw firefox flac force-cgi-redirect fortran ftp gallium garmin gd gdbm gif gimp gmedia gmp gnutls gphoto2 gpm gps gsm gtk h264 h323 iconv icq icu idn ifp ilbc imagemagick imap innodb ipod iproute2 ipv6 ithreads jabber jack java javascript joystick jpeg kde kipi kontact kvm lastfm lcms ldap libcaca libnotify libvirtd live lm_sensors lua lvm lxc lzma lzo mad maildir matroska mbox mdnsresponder-compat mhash mime mjpeg mmap mmx mmxext mng modules mozdevelop mozilla mp3 mp4 mpeg msn mtp mudflap multilib mysql ncurses nepomuk network networkmanager new-hpcups nfsv4 njb nls nptl nptlonly nsplugin offensive ofx ogg oggvorbis ogm openal openexr opengl openmp oscar pam pango parted pcap pcre pdf phonon php plasma plotutils png policykit ppds pulseaudio qemu qt3support qt4 readline real rtc ruby samba sasl sdl semantic-desktop session sha512 sip slang slp smartcard sndfile snmp sox speex spell srt sse sse2 ssh ssl ssse3 startup-notification svg symlink tcltk tcpd theora threads tiff tk tremor truetype udev udisks unicode upower usb utempter v4l v4l2 vaapi vcd vde vhosts video videos vim-syntax virt-network virtualbox vorbis wav webkit wifi wimax wmf wmp wps wxwidgets wxwindows x264 xanim xattr xcb xcomposite xface xft xine xinerama xml xosd xpm xscreensaver xsl xulrunner xv xvid zlib zpm" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" 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 synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="it en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-4" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" QEMU_SOFTMMU_TARGETS="i386 x86_64" QEMU_USER_TARGETS="i386 x86_64" RUBY_TARGETS="ruby19 ruby18" USERLAND="GNU" VIDEO_CARDS="intel v4l" 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, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Did you recently upgrade cairo? ("qlop -lu cairo" will tell) If so, does downgrading to the previous version help?
well, Thu Jul 18 08:36:51 2013 >>> x11-libs/cairo-1.12.14-r3 is the last one, even earlier I upgraded from 1.12.12, here: Thu Apr 11 08:45:51 2013 <<< x11-libs/cairo-1.12.12-r1 Thu Apr 11 08:45:54 2013 >>> x11-libs/cairo-1.12.14 So it seems to me that this happened a bit of time ago to be a possible cause, but If you have a suggestion about the version downgrade to I will surely give it a try; let's say x11-libs/cairo-1.12.12-r1?
x11-libs/cairo-1.12.14-r3 introduced some changes to xcb build parameters. But if the problem already existed before upgrading to that version, then something else is at fault. To help isolate the issue, you could try to switch between SNA and UXA acceleration for xf86-video-intel, or use the unaccelerated xf86-video-modesetting driver.
No luck switching back and forth between UXA and SNA; UXA is a bit slower (by deafult I use SNA, the xscreensaver beahviour (that I use as a probe) is exactly the same. Let's try with modesetting driver then, to rule out issues with intel driver
modesetting driver, even much slower (as expected) than intel one, has no problem or at least I'm unable to reproduce the issue with xscreensaver. Moreover, I tried to downgrade intel driver up to 2.21.6 but the issue is always present. Given that I'm pretty sure that I had no problem when I installed 2.21.6 (18 April) i guess something happened in kernel land, I guess something around 3.10.0 More digging... Thanks for the hint!
Reopen if this is still a problem.
