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Recently, while setting up a Kubuntu Linux terminal server using freenx, I’ve got an issue with the font display being too small. A quick check in Font settings (Applications -> Settings -> System Settings -> Fonts) showed that the “Force fonts DPI” was set to Disabled. To correct this per user, it’s as easy as to select the 96 DPI from the drop down menu, logout and log back in. However, if we want to apply this setting to all users, there’s a bit of more work. ...

On Kubuntu 11.10, we have KsCD program installed to play audio CD. The problem I’m having is that some machines could play audio cd and some couldn’t. All machines run Kubuntu 11.10. To fix this issue, check that /dev/cdrom is a sym link to /dev/sr0 (credit [1]). In my case, machines which couldn’t play audio CD don’t have ‘/dev/cdrom’: # ls -l /dev/cd* ls: cannot access /dev/cd*: No such file or directory Let’s create one: ...

It started with… when I tried to start nfs-kernel-server, it just failed. # /etc/init.d/nfs-kernel-server start Exporting directories for NFS kernel daemon.... Starting NFS kernel daemon: nfsd svcgssd failed! syslogs: Nov 11 23:32:04 nasbox kernel: [ 8106.165582] nfsd: last server has exited, flushing export cache Nov 11 23:32:05 nasbox kernel: [ 8107.240419] svc: failed to register lockdv1 RPC service (errno 97). Nov 11 23:32:05 nasbox kernel: [ 8107.245528] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory Nov 11 23:32:05 nasbox kernel: [ 8107.245566] NFSD: starting 90-second grace period Nov 11 23:32:05 nasbox rpc.svcgssd[26744]: ERROR: GSS-API: error in gss_acquire_cred(): Unspecified GSS failure. Minor code may provide more information - Key table entry not found Nov 11 23:32:05 nasbox rpc.svcgssd[26744]: unable to obtain root (machine) credentials Nov 11 23:32:05 nasbox rpc.svcgssd[26744]: do you have a keytab entry for nfs/@ in /etc/krb5.keytab? If you have DNS server running, make sure you remove the following lines from /etc/hosts: ...

One way to extract a .tar.Z file: $ zcat file.tar.Z | tar xvf -

Install tk8.5, if not yet installed: # apt-get install tk8.5 # update-alternatives --config wish Selection Alternative ----------------------------------------------- 1 /usr/bin/wish8.4 *+ 2 /usr/bin/wish-default 3 /usr/bin/wish8.5</pre> There are 3 alternatives which provide wish. Type in the number that corresponds to tk8.5 (in my case was 3) then hit enter. Change fonts in ~/.gitk to DejaVu Sans Mono. set mainfont {{DejaVu Sans Mono} 9} set textfont {{DejaVu Sans Mono} 9} set uifont {{DejaVu Sans Mono} 9 bold}