Description of problem: I noticed that after update everything yesterday (30/11/07) on my fedora 7 systems I cannod access my Canon PowerShot A610 camera as user, just as root. I tested it with gphoto2 and digikam. Both worked as root, but not as user. Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. update to udev-113-12 2. plug in a Canon PowerShot A610 (and probably other) USB camera 3. try to access it with gphoto -L or digikam --detect-camera as user Actual results: gphoto debug relevant lines: 1.037513 gphoto2-port(2): Opening USB port... 1.037624 gphoto2-port(0): Could not query kernel driver of device. 1.037652 gphoto2-port(0): Could not claim interface 0 (A művelet nem engedett). Make sure no other program or kernel module (such as sdc2xx, stv680, spca50x) is using the device and you have read/write access to the device. Expected results: gphoto -L should auto detect the camera and list the stored files Additional info: After googling, I have found that if I modify the file /etc/udev/rules.d/50-udev.rules it will work. I made this modification: diff 50-udev.rules 50-udev.rules~ 274c274 <SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", \ < NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}", MODE="0666" --- >SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", \ > NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}", MODE="0644" 278c278 <ACTION=="add", SUBSYSTEM=="usb_device", \ PROGRAM="/bin/sh -c 'K=%k; K=$${K#usbdev}; printf bus/usb/%%03i/%%03i $${K%%%%.*} $${K#*. }'", \ < NAME="%c", MODE="0666" --- >ACTION=="add", SUBSYSTEM=="usb_device", \ PROGRAM="/bin/sh -c 'K=%k; K=$${K#usbdev}; printf bus/usb/%%03i/%%03i $${K%%%%.*} $${K#*. }'", \ > NAME="%c", MODE="0644" So I changed the MODE mask in the usb_device related entries. I know that it is an unsafe hack, but a temporary solution before you can fix it.
I have a similar problem. I am running Fedora Core 7. With Kernel package 2.6.23.8-34.fc7, the following rule in a file in /etc/udev/rules.d KERNEL=="4-1", SUBSYSTEM=="usb", ATTR{product}=="Eye-One display ", ATTR{manufac turer}=="GretagMacbeth", ATTR{idVendor}=="0971", ATTR{idProduct}=="2003", MODE:= "0666" produced the desired mode 0666. (The actual device created is /dev/bus/usb/004/00x where 'x' changes, incrementing by 1 each time I plug in the device.) udevtest produces the following output main: looking at device '/devices/pci0000:00/0000:00:1d.3/usb4/4-1' from subsystem 'usb' udev_rules_get_name: rule applied, '4-1' becomes 'bus/usb/004/003' udev_db_get_device: found a symlink as db file udev_device_event: device '/devices/pci0000:00/0000:00:1d.3/usb4/4-1' already in database, cleanup udev_node_add: creating device node '/dev/bus/usb/004/003', major=189, minor=386, mode=0666, uid=0, gid=0 main: run: 'socket:/org/freedesktop/hal/udev_event' main: run: '/sbin/pam_console_apply /dev/bus/usb/004/003 ' main: run: 'socket:/org/kernel/udev/monitor' However, the exact same rule under Kernel package fails to change the permissions. The udevtest output is the same but it doesn't work. On the other hand, I can add OWNER= and GROUP= assignments to the rule and they are enforced. It is just the MODE= assignment which fails. I can use this as a workaround to get access to the device without becoming root by assigning myself as OWNER. In attempting to write a rule which would work, I've also discovered other anomalies. For example, using a PROGRAM=..., NAME=%c, MODE=... works in some cases if the program statement fails but doesn't work if the PROGRAM statement is modified to work as expected. I finally found that the following appears to work with kernel package 2.6.23.12-52.fc7 # i1Display SYSFS{idVendor}=="0971", SYSFS{idProduct}=="2003", MODE:="0666" which is the simplest way to deal with the problem and obviates the more complicated syntax tried above.
"However, the exact same rule under Kernel package" should read "However, the exact same rule under Kernel package 2.6.23.12-52.fc7"
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