Talk:Udev

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Revision as of 14:24, 5 February 2011 by Xduugu (Talk | contribs) (How to match devices like /dev/sdb42)

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umask fails to apply to vfat/ntfs partitions

Has anyone else found that umask settings do not apply as they should? Setting umask to 002 or 0002 results in all files having the executable bit enabled. However, if I manually set the fmask/dmask values (ex: fmask=113,dmask=002) it works fine. --thayer 16:40, 5 May 2010 (EDT)

Possible to Auto Mount Optical Discs?

Is there a way to auto mount CD and DVDs with Udev? --Matthewbauer 23:12, 30 May 2010 (EDT)

I think I hacked up a way and added to the page. --Matthewbauer 00:16, 31 May 2010 (EDT)
With that rule udev will take a lot longer to "process events" during boot. (+-10s more than without it) --Vieira 02:20, 26 June 2010 (GMT)

Wrong command

It's not really wrong, just uselessly complex.

udevadm info -a -p $(udevadm info -q path -n [device name])

we are querying a path-based info, passing as parameter a name-based info query. We can obtain the same results with this much more rational command

udevadm info -a -n [device name]

This is not the only place in the web where I found this strange thing. :/ --4javier 07:14, 24 September 2010 (EDT)

Obsolete information?

Today (Dec 5 2010) I've been following the instruction in the wiki, I've found that udiskie isn't required to autoload CDs/DVSs without HAL, udisks works perfectly without it... only need to explicitly add dbus daemon loading to my rc.conf --RkG 02:42, 5 December 2010 (EST)

are you using a DE? udiskie is intended for people without one thestinger 02:54, 5 December 2010 (EST)
I'm using just a window manager (Xmonad, init-3 level), but installed Gnome also for other members of my family. But really I'm not in a Gnome session :-? --RkG 00:59, 6 December 2010 (EST)
do you use a file manager? pcmanfm and nautilus will both use udev and mount the disks automatically thestinger 13:47, 6 December 2010 (EST)
Yes, I'm using pcmanfm... maybe this should be reflected in the wiki as is a very easy option to control removable devices, inside xorg and with any window manager without having to mess with udev rules. Additionally I spawn a command at the begin of my sessions to automount a external 3.5' USB drive permanently plugged to my computer (udisks --mount /dev/sdXX) This "automount" integrates well with pcmanfm, and requires no additional utilities. (Also for pcmanfm compatibility, I need to start my session with "exec ck-launch-session dbus-launch --sh-syntax --exit-with-session $WM") --RkG 02:17, 7 December 2010 (EST)

SD cards don't cleanly umount

...because the rule as given creates a link: RUN+="/bin/ln -s /media/sd-%k /mnt/sd-%k" which is not deleted on removal. --Ideopath72 08:44, 18 December 2010 (EST)

How to match devices like /dev/sdb42

https://bbs.archlinux.org/viewtopic.php?pid=882211#p882211

I'm not and udev guru, but why sometimes it's

KERNEL!="sd[a-z][0-9]"

and in other examples

KERNEL!="sd[a-z]*"

?

Why not put

KERNEL!="sd[a-z][0-9]*"

everywhere?

Karol 10:11, 23 January 2011 (EST)

Some devices do not have any partitions, so you also want to match /dev/sdb for example that contains the filesystem in such a case. KERNEL!="sd[a-z]*" is the only expression that works for these ones. Xduugu 09:24, 5 February 2011 (EST)