Another observation. When no one is logged in and /var/lib/lightdm is mounted the directory permissions do not allow other access:
% ls -ld /var/lib/lightdm drwxr-x--- 9 lightdm lightdm 4096 May 6 09:50 /var/lib/lightdm If someone is logged into the desktop gui the gvfs directory permissions are set to whatever the users home directory is set to: % ls -ld /home/sopkol drwxr-xr-x 23 sopkol sopkol 4096 May 8 15:54 /home/sopkol So if you can read the directory mount df does not complain permission denied. If you chmod on /var/lib/lightdm so you can read the dir the problem goes away. Don't know if that is a security issue: % chmod 755 ld /var/lib/lightdm and df will not complain. I did a reboot and the permissions did not change and it still worked: % mount | grep gvfs gvfs-fuse-daemon on /var/lib/lightdm/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=lightdm) |% ls -ld /var/lib/lightdm drwxr-xr-x 9 lightdm lightdm 4096 May 8 16:01 /var/lib/lightdm/ |% df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/sdavg-root 9733688 3411316 5834132 37% / udev 495080 4 495076 1% /dev tmpfs 201656 804 200852 1% /run none 5120 0 5120 0% /run/lock none 504140 144 503996 1% /run/shm /dev/mapper/sdavg-backup 19932248 425728 18506688 3% /backup /dev/sda1 188403 30626 148049 18% /boot -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/867806 Title: df -h permission denied error Status in Light Display Manager: New Status in “lightdm” package in Ubuntu: Fix Released Bug description: Running "df -h" from the cli as a normal user returns: Filesystem Size Used Avail Use% Mounted on /dev/md0 37G 6.6G 29G 19% / udev 796M 8.0K 796M 1% /dev tmpfs 322M 888K 321M 1% /run none 5.0M 0 5.0M 0% /run/lock none 805M 92K 805M 1% /run/shm /dev/sda3 1.8T 265G 1.6T 15% /mnt/d1 /dev/sdb3 1.8T 1.7T 102G 95% /mnt/d2 /dev/sdc3 893G 33M 893G 1% /mnt/d3 df: `/var/lib/lightdm/.gvfs': Permission denied $ running with "su" $ sudo df -h Filesystem Size Used Avail Use% Mounted on /dev/md0 37G 6.6G 29G 19% / udev 796M 8.0K 796M 1% /dev tmpfs 322M 888K 321M 1% /run none 5.0M 0 5.0M 0% /run/lock none 805M 92K 805M 1% /run/shm /dev/sda3 1.8T 265G 1.6T 15% /mnt/d1 /dev/sdb3 1.8T 1.7T 102G 95% /mnt/d2 /dev/sdc3 893G 33M 893G 1% /mnt/d3 $ ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: bash 4.2-0ubuntu4 ProcVersionSignature: Ubuntu 3.0.0-10.16-server 3.0.4 Uname: Linux 3.0.0-10-server x86_64 ApportVersion: 1.23-0ubuntu2 Architecture: amd64 Date: Tue Oct 4 14:17:28 2011 InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 (20110426) ProcEnviron: SHELL=/bin/bash LANG=en_US.UTF-8 SourcePackage: bash UpgradeStatus: Upgraded to oneiric on 2011-09-05 (29 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/867806/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
