Bug 296662 – KDE4 regression: keyboard lost when using Alt+Tab several times

• Product: Gentoo Linux
• Status: RESOLVED DUPLICATE

[Description Erik 2009-12-12 22:02:40 UTC]

When Alt+Tab is used to switch applications and then used very soon again, maybe before then new application has appeared, the keyboard is totally lost. It is necessary to close all applications with the mouse, log out, log in again, start all applications and open the documents. It has happened about twice per week since the forced migration from KDE3 to KDE4, which is far from ready for production use (this is one of many problems). (Once the mouse buttons were lost too, so the system had to be shut down with the power button. Luckily this triggered some shutdown function, so that the filesystems were not damaged.)

[Comment 1 Tomáš Chvátal (RETIRED) 2009-12-13 13:02:50 UTC]

what xorg-server version you have?

[Comment 2 Erik 2009-12-13 13:31:42 UTC]

(In reply to comment #1)
> what xorg-server version you have?

1.6.5-r1

[Comment 3 Matthias Schwarzott 2010-01-23 21:20:57 UTC]

Happens here too, with xorg-server-1.7.4.

$ emerge --info
Portage 2.1.7.16 (default/linux/amd64/10.0/desktop, gcc-4.4.2, glibc-2.11-r1, 2.6.32-tuxonice-r164bit x86_64)
=================================================================                                            
System uname: Linux-2.6.32-tuxonice-r164bit-x86_64-AMD_Athlon-tm-_II_X2_250_Processor-with-gentoo-2.0.1      
Timestamp of tree: Sat, 23 Jan 2010 19:45:01 +0000                                                           
ccache version 2.4 [enabled]                                                                                 
app-shells/bash:     4.0_p37                                                                                 
dev-java/java-config: 2.1.10                                                                                 
dev-lang/python:     2.6.4, 3.1.1-r1                                                                         
dev-util/ccache:     2.4-r8                                                                                  
dev-util/cmake:      2.8.0                                                                                   
sys-apps/baselayout: 2.0.1                                                                                   
sys-apps/openrc:     0.6.0-r1                                                                                
sys-apps/sandbox:    2.2                                                                                     
sys-devel/autoconf:  2.13, 2.65                                                                              
sys-devel/automake:  1.9.6-r3, 1.10.3, 1.11.1                                                                
sys-devel/binutils:  2.20
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
virtual/os-headers:  2.6.30-r1
ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -march=native -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /lib64/udev/rules.d /usr/share/X11/xkb /usr/share/config"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -march=native -pipe"
DISTDIR="/usr/my-distfiles"
FEATURES="assume-digest assume-digests ccache distlocks fixpackages multilib-strict news parallel-fetch protect-owned sandbox sfperms sign splitdebug strict unmerge-logs unmerge-orphans userfetch userpriv usersandbox"
GENTOO_MIRRORS="http://gentoo.mneisen.org/ ftp://mirror.netcologne.de/gentoo/"
LANG="de_DE.utf8"
LC_ALL="C"
LDFLAGS="-Wl,-O1,--as-needed"
LINGUAS="de en en_GB"
MAKEOPTS="-j3"
PKGDIR="/usr/my-packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/overlays/zzam /usr/local/overlays/vdr/vdr-xine-overlay /usr/local/overlays/vdr/testing /usr/local/overlays/layman/sunrise /usr/local/overlays/layman/suka /usr/local/overlays/layman/kde-sunset /usr/local/overlays/dev-overlay"
SYNC="cvs://[e-mail]:/var/cvsroot"
USE="3dnow 3dnowext X a52 aac acl acpi alsa amd64 berkdb bluetooth branding bzip2 cairo cdr cli consolekit cracklib crypt cups cxx dbus dri dts dvb dvd dvdr eds emboss encode evo fam firefox flac fortran gdbm gif gpm gstreamer gtk hal iconv ipv6 jpeg kde ldap libnotify mad mikmod mmx mng modules mp3 mp4 mpeg mudflap multilib ncurses nls nptl nptlonly ogg opengl openmp pam pcre pdf perl png policykit ppds pppd python qt3support qt4 quicktime readline reflection sdl session smp spell spl sse sse2 ssl startup-notification svg sysfs tcpd thunar tiff truetype unicode usb v4l v4l2 vorbis x264 xml xorg xulrunner xv xvid zlib" ALSA_CARDS="emu10k1 intel8x0" 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 authn_alias authn_anon 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 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" CAMERAS="ptp2" DVB_CARDS="ttpci usb-wt220u dibusb-usb2 usb-dib0700" ELIBC="glibc" INPUT_DEVICES="mouse keyboard evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text xosd" LINGUAS="de en en_GB" LIRC_DEVICES="serial" QEMU_SOFTMMU_TARGETS="i386 x86_64" QEMU_USER_TARGETS="i386 x86_64" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nvidia v4l vesa vbdev nv"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

[Comment 4 Andreas K. Hüttel 2010-04-17 21:28:08 UTC]

Does this still happen with current stable kde-4.3.5 or with kde-4.4.2?

[Comment 5 Andreas K. Hüttel 2010-04-17 21:34:22 UTC]

*** This bug has been marked as a duplicate of bug 281615 ***