Well, when I boot, I get a little pop-up window, telling me after several other messages:

Jun 17 21:08:01 linux kernel: cdrom: open failed.
Jun 17 21:08:01 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
Jun 17 21:08:01 linux kernel: end_request: I/O error, dev 16:40 (hdd), sector 64
Jun 17 21:08:01 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
Jun 17 21:08:01 linux kernel: end_request: I/O error, dev 16:40 (hdd), sector 66
Jun 17 21:08:01 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
Jun 17 21:08:01 linux kernel: end_request: I/O error, dev 16:40 (hdd), sector 68
Jun 17 21:08:01 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
Jun 17 21:08:01 linux kernel: end_request: I/O error, dev 16:40 (hdd), sector 70
Jun 17 21:08:01 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
Jun 17 21:08:01 linux kernel: end_request: I/O error, dev 16:40 (hdd), sector 72
Jun 17 21:08:01 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
Jun 17 21:08:01 linux kernel: end_request: I/O error, dev 16:40 (hdd), sector 74
Jun 17 21:08:01 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
Jun 17 21:08:01 linux kernel: end_request: I/O error, dev 16:40 (hdd), sector 76
Jun 17 21:08:01 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
Jun 17 21:08:01 linux kernel: end_request: I/O error, dev 16:40 (hdd), sector 78

Now, hdc is CD-ROM and hdd is CD-RW. Everything seems to work fine, but it is still irritating. Anybody any ideas what it means and how to get rid of this?

Failing that, does anybody know which script / program outputs these messages (thus making it possible to understand what type of (hardware)-checks are made)?

I'm a bit further now. It's not just a pop-up, it's the graphical login window (probably kdm, since i use KDE). Where is that getting its input from?

I have exactly the same problem. It also happens when I leave KDE to log on again. (Gnome doesn't seem to do it.) I can see a whole screen full of these messages if I do ctrl + alt + F10. It doesn't seem to be causing any real problems but it is a bit annoying. I'm using Suse 8.1.

Ollie

But is it a problem?? What unsupported command? I hate it, when my system talks gibberish. (It does it with and without a CD in the tray, btw.). What's causing it?