I am unable to use cp210x serial converters while brltty udev rule is installed. Workaround: touch /etc/udev/rules.d/70-brltty.rules lsusb: Bus 002 Device 027: ID 10c4:ea60 Cygnal Integrated Products, Inc. CP210x UART Bridge / myAVR mySmartUSB light udevadm info /dev/ttyUSB0 P: /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.1/2-1.1.3/2-1.1.3:1.0/ttyUSB0/tty/ttyUSB0 N: ttyUSB0 S: serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0 S: serial/by-path/pci-0000:00:1d.7-usb-0:1.1.3:1.0-port0 E: DEVLINKS=/dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0 /dev/serial/by-path/pci-0000:00:1d.7-usb-0:1.1.3:1.0-port0 E: DEVNAME=/dev/ttyUSB0 E: DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.1/2-1.1.3/2-1.1.3:1.0/ttyUSB0/tty/ttyUSB0 E: ID_BUS=usb E: ID_MODEL=CP2102_USB_to_UART_Bridge_Controller E: ID_MODEL_ENC=CP2102\x20USB\x20to\x20UART\x20Bridge\x20Controller E: ID_MODEL_FROM_DATABASE=CP210x UART Bridge / myAVR mySmartUSB light E: ID_MODEL_ID=ea60 E: ID_PATH=pci-0000:00:1d.7-usb-0:1.1.3:1.0 E: ID_PATH_TAG=pci-0000_00_1d_7-usb-0_1_1_3_1_0 E: ID_REVISION=0100 E: ID_SERIAL=Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001 E: ID_SERIAL_SHORT=0001 E: ID_TYPE=generic E: ID_USB_DRIVER=cp210x E: ID_USB_INTERFACES=:ff0000: E: ID_USB_INTERFACE_NUM=00 E: ID_VENDOR=Silicon_Labs E: ID_VENDOR_ENC=Silicon\x20Labs E: ID_VENDOR_FROM_DATABASE=Cygnal Integrated Products, Inc. E: ID_VENDOR_ID=10c4 E: MAJOR=188 E: MINOR=0 E: SUBSYSTEM=tty E: TAGS=:systemd: E: USEC_INITIALIZED=8959801763 Reproducible: Always Steps to Reproduce: 1. install brltty (no need to enable) 2. connect cp210x usb serial adapter 3. Actual Results: [158403.952479] usbcore: registered new interface driver usbserial [158403.952813] usbcore: registered new interface driver usbserial_generic [158403.952929] usbserial: USB Serial support registered for generic [158404.011857] usbcore: registered new interface driver cp210x [158404.011910] usbserial: USB Serial support registered for cp210x [158523.800212] usb 2-1.1.3: USB disconnect, device number 25 [158526.850483] usb 2-1.1.3: new full-speed USB device number 26 using ehci-pci [158526.963639] cp210x 2-1.1.3:1.0: cp210x converter detected [158527.050456] usb 2-1.1.3: reset full-speed USB device number 26 using ehci-pci [158527.161641] usb 2-1.1.3: cp210x converter now attached to ttyUSB0 [158527.183589] usb 2-1.1.3: usbfs: interface 0 claimed by cp210x while 'brltty' sets config #1 [158527.184309] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0 Expected Results: [158959.603730] cp210x 2-1.1.3:1.0: cp210x converter detected [158959.690418] usb 2-1.1.3: reset full-speed USB device number 27 using ehci-pci [158959.801830] usb 2-1.1.3: cp210x converter now attached to ttyUSB0 Portage 2.1.12.2 (default/linux/amd64/13.0/desktop, gcc-4.7.3, glibc-2.15-r3, 3.11.0-rc2 x86_64) ================================================================= System uname: Linux-3.11.0-rc2-x86_64-Intel-R-_Core-TM-2_Duo_CPU_L9400_@_1.86GHz-with-gentoo-2.2 KiB Mem: 3939308 total, 174712 free KiB Swap: 4192252 total, 4134524 free Timestamp of tree: Mon, 29 Jul 2013 00:45:01 +0000 ld GNU ld (GNU Binutils) 2.23.1 app-shells/bash: 4.2_p45 dev-java/java-config: 2.1.12-r1 dev-lang/python: 2.7.5, 3.2.5-r1 dev-util/cmake: 2.8.10.2-r2 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: 1.10.3, 1.11.6, 1.12.6 sys-devel/binutils: 2.23.1 sys-devel/gcc: 4.6.4, 4.7.3 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.7 (virtual/os-headers) sys-libs/glibc: 2.15-r3 Repositories: gentoo gentoo-haskell ke-shared ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA skype-eula" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=native -g -gdwarf-4" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-O2 -pipe -march=native -g -gdwarf-4" DISTDIR="/usr/local/distfiles/" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs compressdebug config-protect-if-modified distlocks ebuild-locks fail-clean fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unmerge-logs unmerge-orphans userfetch userpriv usersandbox xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="ftp://schur.dy.fi/ http://trumpetti.atm.tut.fi/gentoo/ http://ftp.df.lth.se/pub/gentoo/" LC_ALL="en_US.utf8" LDFLAGS="-Wl,--as-needed -Wl,-O1" MAKEOPTS="-j2" PKGDIR="/usr/local/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="/usr/local/tmp/" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/var/lib/layman/haskell /etc/shared/lib/portage/overlay" SYNC="rsync://trumpetti.atm.tut.fi/gentoo-portage/" USE="256-color X a52 aac accessibility acl acpi alisp alltargets alsa amd64 amr ansi apng bash-completion berkdb bluetooth branding btrfs bzip2 cairo caps cdda cdr cli clisp cracklib crypt cryptsetup cscope css cups curl cxx dbus dconf declarative dirac dri dts dvd dvdr eds emboss enca encode exif extra extras fam ffmpeg fftw firefox flac fontconfig fortran fortran95 ftp g3dvl gallium games gbm gcj gd gdbm gdu gif git glamor glib gmp gnome gnuplot go gold gpm graphics graphite gtk gtk3 gudev hoogle hwdb iconv icu idn image imagemagick imlib inotify iproute2 ipv6 jadetex java javascript jpeg jpeg2k kipi kmod kpathsea lapack laptop latex latex3 lcms ldap libkms libnotify llvm lto lxde lzma lzo mad math matroska md5sum midi minizip mmap mmx mng mod modplug mono mouse mp3 mp4 mpeg mpi mpi_njtree mplayer mudflap multilib multitarget musepack music nautilus ncurses net netpbm network networkmanager nls npp nptl nsplugin ntp ogg openexr opengl openmp pam pango pcre pdf perl plotutils png pnm policykit postscript ppds ps pstricks publishers pulseaudio python python3 qt3support qt4 readline reports romio rtmp rtsp samba schroedinger science sdl sdl-image secure-delete semantic-desktop server session smbclient smp sna sparse speex spell sqlite sse sse2 sse3 ssl ssse3 startup-notification static-libs stream subtitles subversion supernodal svg system-libs system-sqlite systemd systemtap tcpd tex4ht theora threads threadsafe tiff timidity tk toolbar trace truetype udev udis86 udisks unicode unlock-notify upower usb uxa vaapi vala vdpau vim vim-syntax vorbis wav wavpack weather webkit webkit2 wma x264 xattr xcb xcomposite xinerama xml xmp xorg xosd xpm xrandr xv xvid zlib" 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" CURL_SSL="nss" 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 wacom" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en fi en_GB" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-4" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby18 ruby19" USERLAND="GNU" VIDEO_CARDS="vesa intel radeon 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, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
The udev rules came from upstream. This is really their bug. Feel free to report it to them. If you'd like, I'm happy to do that for you.
It seems this bug is/has been in known on several distros, is there some version to be stabilized, I could test for this problem?
(In reply to emil karlson from comment #2) > It seems this bug is/has been in known on several distros, is there some > version to be stabilized, I could test for this problem? That is mostly brltty-4.5, and the bug was fixed in ubuntu on 2011-11-22 https://bugs.launchpad.net/ubuntu/+source/brltty/+bug/874181
This hasn't been fixed upstream in 4.5, either. Ubuntu fixed it by commenting out the udev rules downstream. I'll post to the brltty mailing list about this tomorrow morning. I'd like to see it fixed upstream before I write a patch for Gentoo.
I posted about this on the brltty list, and the only answer I received was that commenting out the rules in our package is the suggested practice. I'll commit a fix later today.
Fixed in brltty-4.5-r1 by commenting out the conflicting udev rules.
