Le 21/03/2016 15:11, Tim a écrit :
Allegedly, on or about 18 March 2016, François Patte sent:
> I am facing a strange problem with xfce configuration: when I put a
> commercial video dvd in the drive: no icon appears on the desktop. and
> there are error messages in /var/log/messages, like:
>
> blk_update_request: I/O error, dev, sr0 sector 9137664
>
> buffer I/O error on dev sr0, logical block 1142208 async page read
>
> But, I can play the video with vlc without any problem....
>
> If I mount this dvd (say: mount /dev/sr0 /media), no problem, no error
> reported....
>
> When I umount the dvd (umount /media), an icon appears on the desktop
> and immediately disappears.....
>
> This problem does not occur with dvd I recorded myself, nor with any
> other removable media (usb sticks or drives).
An educated guess: This would be an encrypted, deliberately-faulted
(some discs have deliberate errors that confuse the hell out of
computers, but standalone DVD players will simply bypass), or some other
kind of copyguarded DVD, some of which are a major pain to do anything
with on a Windows OS PC. Even my old dreaded Windows installation would
refuse to even load some DVDs to look at the files in the file browser,
never mind trying to play them. Your VLC installation *may* have
support for handling such DVDs in a different manner.
Of course, it could just be a bad disc (you don't mention whether it's
just one problem disc), or it may need cleaning, or your drive may need
cleaning.
This problem occurs with 2 machines (laptop) on which I installed fedora
23. Problem does not occur on a third computer running fedora 21. On one
of the laptops where previously installed a debian, and no problem occured.
It is not a vlc problem; vlc mounts and reads these dvd without any
problem, I think that it is an xfce problem, but on my fedora 21 I have
the same version of xfce as on laptops with fedora 23.
--
François Patte
UFR de mathématiques et informatique
Laboratoire CNRS MAP5, UMR 8145
Université Paris Descartes
45, rue des Saints Pères
F-75270 Paris Cedex 06
Tél. +33 (0)1 8394 5849
http://www.math-info.univ-paris5.fr/~patte