SuSE Linux: Version 8.1
After having booted your system, several system messages appear in the lower half of the display manager. You want to know what causes these messages.
These messages are produced by the kernel during the boot process and displayed, for example, on the xconsole. Additional log information can be found in the system log files or in the console 10 (Ctrl+Alt+F10). These messages have different causes/reasons, some of which will be explained in the following lines. What they all have in common is that they are not error messages, but only system information generated by the kernel.
For example, let us look at:
Can't locate module sound-slot-1 Can't locate module sound-service-1-0
Regarding this message, please refer to the following article from our database:"KDE 2.x: Can't locate module sound-slot-1" (http://sdb.suse.de/en/sdb/html/thallma_kde2_mixer.html)
There is a similar message in a different form:
Can't locate module char major any_number Can't locate module char major a_different_number
The allocation of each number to its respective device can be looked up in the file
/usr/src/linux-your_kernel_version/Documentation/devices.txt
, provided
the kernel sources (package: kernel-source) have been installed.
In this file you can find out what device and module are affected. As above, it does not
have to be an error, but perhaps only information about the module not having
to be loaded any more because it is already loaded or is not required.
As for the meaning of:
linux kernel: end_request: I/O error, dev 16:40 (hdd),sector 64 linux kernel: ide-scsi: hdd: unsupported command in request queue (0) linux kernel: end_request: I/O error, dev 16:40 (hdd),sector 66 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
In this case, the kernel is trying to access the CD writer as an IDE device (hdd). However, since the writer has been mounted as a SCSI device using SCSI emulation, it can no longer be accessed as an IDE device. Thus, the kernel produces these input/output "error" messages. If your system is equipped with a second CD or DVD drive in addition to the CD-writer and the error messages refer to both devices (e.g. hdc and hdd):
linux kernel: end_request: I/O error, dev 16:40 (hdc),sector 64 linux kernel: ide-scsi: hdd: unsupported command in request queue (0) linux kernel: end_request: I/O error, dev 16:40 (hdd),sector 66 linux kernel: ide-scsi: hdd: unsupported command in request queue (0)
then see also the SDB article: "Cannot Mount CD or DVD" (http://sdb.suse.de/en/sdb/html/81_ide-scsi.html).
Yet another message:
linux kernel: hda: dma_intr: status=0x51 { DriveReady SeekComplete Error } linux kernel: hda: dma_intr: error=0x84 { DriveStatusErrorBadCRC
You have activated the system-tuning in Yast2 but either your hard disk or your IDE controller do not work properly with DMA support. The cause of this problem may be a too long cable or a different hardware component, too.
The DMA mode can be configured with "Yast2", "Hardware", "Configure IDE DMA mode". Alternatively, you can use hdparm. Refer to the manpages for additional information on hdparm (e.g. in Konqueror by entering man:hdparm).
Note: The configuration of the DMA mode exceeds the scope of the free-of-charge installation support.