cannot play DVD's on Fedora 10 386

Kevin Kempter kevink at consistentstate.com
Sun Aug 30 20:21:53 UTC 2009


On Sunday 30 August 2009 13:58:06 Kevin Kempter wrote:
> On Sunday 30 August 2009 13:41:47 Mikkel L. Ellertson wrote:
> > Kevin Kempter wrote:
> > > I did some more digging. /dev/dvd and /dev/cdrom are both symlinks to
> > > /dev/sr0
> > >
> > > the symlinks (/dev/dvd and /dev/cdrom) are both owned by user:group
> > > root:root and have 777 permissions
> > >
> > > any other thoughts?
> > >
> > > Thanks in advance....
> >
> > Every symlink I have seen has 777 permissions. What counts are the
> > permissions of the file it links to.
> >
> > [mikkel lib]$ ls -l /dev/dvd
> > lrwxrwxrwx 1 root root 3 2009-08-20 11:35 /dev/dvd -> sr0
> > [mikkel lib]$ ls -l /dev/sr0
> > brw-rw----+ 1 mikkel root 11, 0 2009-08-20 11:35 /dev/sr0
> >
> > Mikkel
>
> How do I change perms on the device?
>
> If I do a chmod a+rw /dev/sr0 it changes the perms for about 30 seconds
> then they get changed back to rw for root only.


ok, I've done this:

1) I added a MODE="0660" to each line in  
/etc/udev/rules.d/70-persistent-cd.rules

2) rebooted, checked perms of /dev/sr0 and I now have rw for all

3) tried to play a dvd via kaffiene - same error:
The source can't be read

Maybe you don't have enought rights for this, or source doesn't 
contain data (e.g: no disc in drive). (Error reading from DVD)


4) I tried multiple DVD's - same error, also tried the same DVD's in another 
laptop running Fedora 10 x86_64 - works fine

5) checked dmesg output and I see this:
Buffer I/O error on device sr0, logical block 223                              
Buffer I/O error on device sr0, logical block 224                              
Buffer I/O error on device sr0, logical block 225                              
Buffer I/O error on device sr0, logical block 226
Buffer I/O error on device sr0, logical block 227
Buffer I/O error on device sr0, logical block 228
Buffer I/O error on device sr0, logical block 229
Buffer I/O error on device sr0, logical block 230
Buffer I/O error on device sr0, logical block 231
Buffer I/O error on device sr0, logical block 232
end_request: I/O error, dev sr0, sector 2040
end_request: I/O error, dev sr0, sector 1824
end_request: I/O error, dev sr0, sector 1872
end_request: I/O error, dev sr0, sector 1880
end_request: I/O error, dev sr0, sector 1872
end_request: I/O error, dev sr0, sector 2400
end_request: I/O error, dev sr0, sector 2408
end_request: I/O error, dev sr0, sector 2400
end_request: I/O error, dev sr0, sector 2400
end_request: I/O error, dev sr0, sector 2400
end_request: I/O error, dev sr0, sector 2704
end_request: I/O error, dev sr0, sector 2712
end_request: I/O error, dev sr0, sector 2704
end_request: I/O error, dev sr0, sector 2704
end_request: I/O error, dev sr0, sector 2704
end_request: I/O error, dev sr0, sector 3624
end_request: I/O error, dev sr0, sector 3632
end_request: I/O error, dev sr0, sector 3624
end_request: I/O error, dev sr0, sector 3624
end_request: I/O error, dev sr0, sector 3624



Thoughts?




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