I can not print with my USB printer - but no problem via Knoppix CD. I do not see a file /proc/bus/usb/drivers , but it should be there? I am using Kernel 2.6.5-rc-2 Other details: ls -l /dev/usb/lp0 ~ crw-rw-rw- 1 root lp 180, 0 1. Jan 1970 /dev/usb/lp0 lsmod|grep usb ~ usblp 11776 0 usbcore 103644 5 usblp,uhci_hcd,hid Everything looks good. But printer does not print. Seems to be an USB problem, not CUPS! Printer is Epson C44 Plus. Reproducible: Always Steps to Reproduce: 1. 2. 3. Portage 2.0.50-r1 (default-x86-2004.0, gcc-3.3.3, glibc-2.3.3_pre20040207-r0, 2.6.5-rc2) ================================================================= System uname: 2.6.5-rc2 i686 Pentium III (Coppermine) Gentoo Base System version 1.4.3.13p1 Autoconf: sys-devel/autoconf-2.59-r3 Automake: sys-devel/automake-1.8.3 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CFLAGS="-O2 -march=pentium3 -fprefetch-loop-arrays -funroll-loops -pipe" CHOST="i686-pc-linux-gnu" COMPILER="gcc3" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3/share/config /usr/share/config /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O2 -march=pentium3 -fprefetch-loop-arrays -funroll-loops -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs ccache sandbox" GENTOO_MIRRORS="ftp://ftp.join.uni-muenster.de/pub/linux/distributions/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X alsa apm avi berkdb bonobo crypt cups directfb encode esd foomaticdb gdbm gif gnome gpm gstreamer gtk gtk2 gtkhtml guile imlib java jpeg ldap libg++ libpcap libwww mad mikmod motif mozilla mpeg mysql ncurses nls oggvorbis opengl oss pam pdflib perl php png postgres ppds python readline samba scanner sdl slang spell ssl svga tcltk tcpd truetype usb video_cards_radeon x86 xml2 xmms zlib"
enable LogLevel debug in cupsd.conf and post a log of the printing process
i cannot help you if you don't do that ;)
As i do not use Gentoo I can not help any more.