I'm using gentoo-sources 2.6.16-r3. I also have a Logitech MX500 mouse connected to my computer's PS/2 port (using the supplied PS/2 adapter). The mouse has 8 buttons and they all work properly. Here is the problem: 1. Detach the mouse cord from the computer PS/2 port. 2. Attach the mouse cord back to the computer PS/2 port. Now the buttons don't work properly anymore. Only the main buttons work (1-3), not all 8. xev shows that no button events above 3 are generated. The two thumb buttons produce button 2 events, the scroll wheel, scroll buttons and the task switch button produce no events at all. This doesn't happen with gentoo-sources 2.6.15-r1. With 2.6.15-r1 the buttons work properly even after removing the cord and connecting it back. Emerge info: Portage 2.0.54 (default-linux/x86/2006.0, gcc-3.4.5, glibc-2.3.5-r3, 2.6.16-gentoo-r3 i686) ================================================================= System uname: 2.6.16-gentoo-r3 i686 Unknown CPU Typ Gentoo Base System version 1.6.14 dev-lang/python: 2.3.5-r2, 2.4.2 sys-apps/sandbox: 1.2.12 sys-devel/autoconf: 2.13, 2.59-r7 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r1 sys-devel/binutils: 2.16.1 sys-devel/libtool: 1.5.22 virtual/os-headers: 2.6.11-r2 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CBUILD="i686-pc-linux-gnu" CFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/eselect/compiler /etc/gconf /etc/env.d" CXXFLAGS="-march=athlon-xp -O2 -pipe -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoconfig distlocks sandbox sfperms strict" GENTOO_MIRRORS="ftp://trumpetti.atm.tut.fi/gentoo/" LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" LINGUAS="en" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://trumpetti.atm.tut.fi/gentoo-portage" USE="x86 3dnow X aac alsa apache2 apm audiofile avi berkdb bitmap-fonts bzip2 cdr cjk cli crypt cups curl dri eds emboss encode exif expat flac foomaticdb fortran gdbm gif glut gmp gpm gstreamer gtk2 imlib isdnlog jpeg libg++ libwww mad mikmod mmx motif mp3 mpeg ncurses nls nptl ogg opengl pam pcre pdflib perl png pppd python quicktime readline reflection sdl session spell spl sse ssl tcpd theora tiff truetype truetype-fonts type1-fonts udev unicode vorbis win32codecs xml xml2 xorg xv xvid zlib linguas_en userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CTARGET, INSTALL_MASK, LDFLAGS, PORTDIR_OVERLAY
Are you planning to damage the PS/2 port soon? It's not hotplug, uh...
No I'm not :) The reason I discovered this is my mouse which is not functioning properly. Every now and then (every few minutes in Windows) there is a small (1 sec) halt during which the mouse pointer doesn't move and no button presses get registered. This problem is for some reason a lot more common in Windows. In Gentoo this happens very seldom but it seems the my mouse gets disconnected during these hickups. I think a new mouse would be a good idea. A bug fix would be nice also :)
(In reply to comment #2) > No I'm not :) The reason I discovered this is my mouse which is not functioning > properly. Every now and then (every few minutes in Windows) there is a small (1 > sec) halt during which the mouse pointer doesn't move and no button presses get > registered. The fact that the problem exists in Microsoft Windows as well indicates that it is a hardware problem. Please try with a different mouse and see if that improves the situation. If not, feel free to reopen this bug report.
No, although the hickups are present in Windows the buttons don't stop working there! Also buttons don't stop working with older kernels. This is an issue only with the 2.6.16-r3. The real question is: Should a PS/2 mouse work properly after detaching and attaching the cord? With the old kernel it did work properly, with the new kernel it doesn't. (I didn't reopen yet...)
(In reply to comment #4) > Should a PS/2 mouse work properly after detaching and attaching the cord? With > the old kernel it did work properly, with the new kernel it doesn't. Since the PS/2 specification doesn't allow hotplugging a device, I would say no. You could try reporting this problem upstream at http://bugzilla.kernel.org/ and see what they say. If you decide to do that, please post the URL here. Of course, you should test with the latest release (linux-2.6.17-rc2) before reporting the issue.
I reported this to kernel devs and they have now supplied a patch that works: http://bugzilla.kernel.org/show_bug.cgi?id=6440 I closed this.
I'll reopen so we can watch the upstream bug and include the patch when it is merged.
Fixed in gentoo-sources-2.6.16-r5 (genpatches-2.6.16-7)
