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).

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.

Of course! If not vlc does not read dvd. But, is libdvdcss is reponsible for the display of dvd icons? I am wondering if there is not a bug there: I took libdvdcss from remi repo (livna was out of order at that time).

Le 21/03/2016 22:47, Ed Greshko a écrit : > > > On 03/22/16 05:40, François Patte wrote: >> 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. > > Is libdvdcss (not a fedora package) installed on your working systems? Of course! If not vlc does not read dvd. But, is libdvdcss is reponsible for the display of dvd icons? I am wondering if there is not a bug there: I took libdvdcss from remi repo (livna was out of order at that time).