Messages in this thread | | | Date | Sat, 26 May 2007 22:18:54 +0200 | From | bert hubert <> | Subject | udev regression? lsusb silent (no output) since 2.6.22-rc2 at least |
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Greg, Kay, kernel people,
Today I booted 2.6.22-rc2 on Ubunty Edgy Eft, and lsusb died on me:
ahu@intel:~$ lsusb ahu@intel:~$ sudo lsusb ahu@intel:~$
This behaviour persists in rc4. This might be udev related. I'm running: ii udev 093-0ubuntu18.0edgy2
USB does work fine.
Bit from strace:
open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3 fstat64(3, {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 getdents64(3, /* 4 entries */, 4096) = 112 close(3) = 0 open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3 fstat64(3, {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 getdents64(3, /* 4 entries */, 4096) = 112 getdents64(3, /* 0 entries */, 4096) = 0 close(3) = 0 (end of program)
ahu@intel:~$ ls -l /dev/bus/usb -d drwxr-xr-x 3 root root 80 2007-05-26 21:58 /dev/bus/usb
ahu@intel:~$ ls -l /dev/bus/usb/ total 0 lrwxrwxrwx 1 root root 14 2007-05-26 21:58 devices -> .usbfs/devices
ahu@intel:~$ ls -l /dev/bus/usb/devices lrwxrwxrwx 1 root root 14 2007-05-26 21:58 /dev/bus/usb/devices -> .usbfs/devices
ahu@intel:~$ wc -l /dev/bus/usb/devices 95 /dev/bus/usb/devices
On another machine (debian etch), with an older kernel, where lsusb does work:
open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3 fstat64(3, {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 getdents64(3, /* 4 entries */, 4096) = 96 close(3) = 0 open("/dev/bus/usb", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3 fstat64(3, {st_mode=S_IFDIR|0755, st_size=80, ...}) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 getdents64(3, /* 4 entries */, 4096) = 96 getdents64(3, /* 0 entries */, 4096) = 0 close(3) = 0 open("/dev/bus/usb/001", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 3 fstat64(3, {st_mode=S_IFDIR|0755, st_size=60, ...}) = 0 fcntl64(3, F_SETFD, FD_CLOEXEC) = 0 getdents64(3, /* 3 entries */, 4096) = 72 open("/dev/bus/usb/001/001", O_RDWR) = -1 EACCES (Permission denied) open("/dev/bus/usb/001/001", O_RDONLY) = 4
Any clues? Please let me know how I can help solve this problem!
Bert
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