xvinfo: No Adaptors Present and a curious fix for fglrx

A few days after installing Debian, VLC media player stopped playing video. This launched a whole crusade to get the damned thing to work. And it wasn't easy. The following is using the fglrx ATI proprietary drivers and ONLY applies to these drivers. I am using the Radeon X1950.

To cut a long story short, after a lot of web searching and trial and error, I found the problem: my Xvideo stopped working. This was tested by typing "xvinfo" into the terminal. A healthy output would look something like this:

X-Video Extension version 2.2
screen #0
 Adaptor #0: "ATI Radeon AVIVO Video"
   number of ports: 4
   port base: 131
   operations supported: PutImage
   supported visuals:
     depth 24, visualID 0x23
     depth 24, visualID 0x24
     depth 24, visualID 0x25
     ......

And go on for quite a while (This only the first ten lines of the output when I run xvinfo.)
An unhealthy xvinfo output (and the problem I was experiencing) looks like this:

X-Video Extension version 2.2
screen #0
no adaptors present

The problem with this is that I have yet to find a decent solution to "no adaptors present." I have looked and looked and looked and found very little. For one thing, if you are having problems with xvideo with fglrx, first try running (either as root or with sudo)

aticonfig --overlay-type=Xv

I have heard that for some cases this is the fix. Which is good because it is easy. But, for me, it didn't work.

After reconfiguring every option I could think of in my xorg.conf and breaking X half a dozen times, reinstalling the fglrx drivers from both the Debian repos and the binary from ati.com and breaking X half a dozen more times, the problem quite suddenly fixed itself. These are the steps that I did immediately before. I am making no claim that this will fix anything, and cannot actually describe what happened during these steps that made my xvideo work again. I say this because really, for all I know, the great Debian gods intervened and fixed it with magic. I really don't know why or even if this fixed my problem, but if you are desperate like I was, you never know. Just remember, you are trying it at your own risk.

First I downloaded the latest version of the proprietary ATI drivers. These can be found on ATI's website.

Second, I downloaded this script that I found on the Debian forums.

Third, I quit gdm and drop down to a console. This is required, the script will not run if you have any running X sessions. Then I navigated to the folder I saved these files in and (as root) ran the install script (install-fglrx-debian.sh). This will do quite a bit (and if you know your way around scripting maybe you could open the script and see. I really don't know what it did.) All I know is that it downloads a few files from the repos and installs them, downloads the ATI binary (the I already downloaded, but I'll need that one in a few minutes), and generates a package to install, then installs it. The problem with this script is that it breaks X. Why? I think it has something to do with the fact that it generated a package for me that was for Ubuntu. Whatever the case, when the script finished I tried to load up gdm and it failed.

Fourth, going back to the console, I ran (as root) ATI's file (ati-driver-installer[version number]-x86.x86_64.run) and it reinstalled the ATI driver. When gdm successfully started again, out of curiosity I ran xvinfo, but this time with success! I don't know what it did behind the screen, but suddenly I have xvideo again. I don't think it was anything in my xorg.conf (which was regenerated during this process, so back up first!) because I have nearly identical files before and after. Your best guess is as good as mine, but I've decided not to look a gifthorse in the mouth. If you are running compiz fusion, you may have to disable it to watch videos without flickering. For easy switching on/off I recommend installing the package fusion-icon and making sure it starts at boot. It makes an icon on the panel that right-clicking will allow you to switch on/off compositors and window decorators.

apt-get problem: The package index files are corrupted

My computer crashed today, due to the fact that I was testing my media server and foolishly tried to play a video through VNC. Silly me. Nothing worked short of a hard reboot.

When I started up my system again, the box popped up saying that there were updates ready to install. Since I like doing things via the command line, I did an apt-get upgrade and it didn't find any updates. The box down in the corner clearly stated that there were 4 updates to install, but they didn't show up anywhere. Later I tried to install easytag (a fantastic GTK+ based audio file renamer/tagger) and got an error:

...The package index files are corrupted...

What that meant I wasn't sure, and a lot of google searching yielded a lot of people with the problem with very few results. Certain things would install fine but others would give the same, scary sounding error. I found one source that even attempted to provide a solution other than "try 'apt-get clean'!" on the Ubuntu forums.

The solution provided sounded a little drastic, but they worked:

sudo rm /var/lib/apt/lists/*
sudo aptitude update

Rather than actually delete anything I opted to move all of the files in /var/lib/apt/lists/ to a temporary folder. This only caused the problem that there is a folder in there called "partial" that will be moved with the mv command that you have to move back to the original directory, or else you will get an error saying that the folder doesn't exist. After that, apt-get update rebuilds the previously corrupted index and installing programs works again. After doing this, my four previously invisible updates showed up and were upgraded no problem.