On 15 May, Philip Webb wrote: > For the 1st time in 2 months, I went to write a CD & discovered > that /dev/sr0 is not being created nor symlink /dev/cdrom ; > I looked at 'dmesg': no mention of 'sr' or 'cd' being found. > > I've searched the Forum (more noise than signal as usual) & Bugs: nothing. > > I tested the drive: SystemRescue 1.1.0 (kernel 2.6.25.16) starts correctly > & mounts /dev/sr0 on /mnt/cdrom ; its 'dmesg' says : > > sr0: scsi3-mmc drive: 16x/16x writer dvd-ram cd/rw xa/form2 cdda tray \ > Uniform CD-ROM driver Revision: 3.20 > > BIOS reports "Auto-detecting PATA primary master: ATAPI CD-ROM". > > I updated to Hal-0.5.11-r8 on 090221 & Udev-124-r2 on 090418 ; > I recompiled Udev, but that made no difference. > I've checked the files which mention 'cd' in /etc/udev/rules.d > & there is no difference today from those at 090315 , > when I did my last system back-up & last used the CD drive. > > I've checked my kernel configs for 2.6.25 & 2.6.29 using 'gvimdiff' > & there is no difference between the relevant sections in Devices. > I updated to 2.6.29 on 090404 . > > I tried my other kernels with the following unnerving findings : > 2.6.25 creates /dev/sr0 , but after X starts the mouse/keyboard fail; > 2.6.23 & 2.6.22 create /dev/sr0 , but X won't start at all. > > I notice that under 'Device Drivers -> ATA/ATAPI/MFM/RLL Support' > there are the lines : > > generic ATA/ATAPI disk support (NEW) > [*] ATA disk support (NEW) > [ ] ATAPI floppy support (NEW) > < > Include IDE/ATAPI CDROM support (NEW) > > I didn't say 'y' to 'ATA ... Support', so both config files (25 & 29) say > > # CONFIG_IDE is not set > > This is because I understood that if you have > 'SCSI device support -> SCSI CDROM support' enabled, > then you shouldn't have 'ATA...RLL' enabled as well. > Is this a vital change in 2.6.29 ? > > Has anyone else encountered this ? Does anyone have suggestions ? >
Is your CDwriter a SATA device? Here, 2.6.29-r3 works just fine with my SATA-dvd-writer. -- Helmut Jarausch Lehrstuhl fuer Numerische Mathematik RWTH - Aachen University D 52056 Aachen, Germany
