On Sun, 08 Oct 2006 23:15:48 +0200, Michael Prokop wrote:
when I tried to use the xvidix driver for mplayer, I get "Error occurred during pci scan: Operation not permitted" error for normal user, but root is ok....
You proposed solution didn't work, but thank you mika to help me track down this problem. I brought up the issue in mplayer mlist and this is the feedback that I got:
Nico Sabbi <nsabbi@...it> said:
you need dhahelper (it's a kernel module in vidix)
I looked up the trace log, right before the iopl call, mplayer tried to open /dev/dhahelper. I tried to install the dhahelper kernel module myself but failed:
10541 open("/dev/dhahelper", O_RDWR|O_LARGEFILE) = -1 ENOENT (No such file or directory) 10541 iopl(0x3) = -1 EPERM (Operation not permitted)
% insmod dhahelper insmod: can't read 'dhahelper': No such file or directory
Do you know about the dhahelper kernel module? Do you think that might be the reason? Ok, I guess so:
From http://72.14.203.104/linux?q=cache:YIP5lKF3HjsJ:sourceforge.net/mailarchive/...
,----- | > video_out_vidix: Couldn"t find working VIDIX driver | > load_plugins: failed to load video output plugin <vidix> | > main: video driver <vidix> failed | > | > Xine didn"t particularly like it, and failed to load. I can only seem | > to get xine to load with the xv drivers. Does anyone know what I might | > do to get vidix working? | | There are two ways of overcoming this: | 1) run xine suid root | 2) install the dhahelper kernel module (add the options --enable-dha-kmod | --with-linux-path=/path/to/kernel/source to configure) `-----
Could you compile a kernel that have the dhahelper module, since the issue affect both mplayer and xine, please?
So try to deactivate the pci scan via specifying the driver manually (IIRC it's radeon on your box): "mplayer -vo xvidix:radeon ..." If that does not work too it seems you have to install mplayer with suid set or run mplayer as root when using the xvidix stuff.
FYI, here is what I tried:
I tred to deactivate the pci scan via specifying the driver manually, but that failed too:
$ mplayer -v -v -v -v -dr -vo xvidix:radeon_vid.so -fixed-vo ... vosub_vidix: vidix_preinit(radeon_vid.so) was called [radeon] Error occurred during pci scan: Operation not permitted [VO_SUB_VIDIX] Couldn't find working VIDIX driver. Error opening/initializing the selected video_out (-vo) device.
Failing this, I tried to chmod mplayer with suid set, but that won't work either:
$ ls -l /usr/bin/mplayer -rwsr-x--- 1 root video 3943448 08-02 11:44 /usr/bin/mplayer
$ strace -f -eopen,iopl -o /tmp/mplayer mplayer -dr -vo xvidix test.mpg $ grep iopl /tmp/mplayer 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted) 3929 iopl(0x3) = -1 EPERM (Operation not permitted)