Hello, Using 2.6.24-1-686, my two IDE-connected cd/dvd drives are detected as /dev/sr0 and /dev/sr1, symlinked to cdrom0 and cdrom1, and work perfectly. When I boot 2.6.25-2-686-bigmem, no entries for these devices appear in /dev.
With the working kernel, the relevant part of dmesg is: scsi7 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 2 usb-storage: waiting for device to settle before scanning ata5.00: ATAPI: HL-DT-STDVD-RAM GSA-H55L, 1.05, max UDMA/66 ata5.01: ATAPI: HL-DT-ST DVD-ROM GDR-H30N, 1.00, max UDMA/33 usb 7-2: new low speed USB device using uhci_hcd and address 2 ata5.00: configured for UDMA/66 usb 7-2: configuration #1 chosen from 1 choice ata5.01: configured for UDMA/33 BAR5:00:02 01:7F 02:22 03:CA 04:00 05:00 06:00 07:00 08:00 09:00 0A:00 0B:00 0C:07 0D:00 0E:00 0F:00 With the bigmem kernel, what looks like the corresponding part of dmesg: [ 0.812202] PCI: Setting latency timer of device 0000:03:00.0 to 64 [ 0.812281] scsi5 : ahci [ 0.812455] scsi6 : ahci [ 0.812583] scsi7 : ahci [ 0.812645] ata5: SATA max UDMA/133 abar [EMAIL PROTECTED] port 0xfeaffd00 irq 16 [ 0.812705] ata6: SATA max UDMA/133 abar [EMAIL PROTECTED] port 0xfeaffd80 irq 16 [ 0.812765] ata7: DUMMY [ 0.874732] usb 7-1: configuration #1 chosen from 1 choice [ 0.875046] scsi8 : SCSI emulation for USB Mass Storage devices [ 0.875218] usb 7-1: New USB device found, idVendor=04b4, idProduct=6830 There are no error messages referring to the DVD drives elsewhere in dmesg. There's a slight difference in the output of lsmod | grep ide between the two kernels. For the working kernel: ide_cd 36224 0 cdrom 32512 2 ide_cd,sr_mod ide_core 108292 2 ide_cd,generic For the bigmem kernel that doesn't detect the drives: ide_cd_mod 33632 0 cdrom 32640 2 sr_mod,ide_cd_mod ide_pci_generic 4996 0 [permanent] ide_core 101624 2 ide_cd_mod,ide_pci_generic I have ide-core, ide-cd, cdrom and sr_mod listed in /etc/modules to try to ensure relevant stuff gets loaded at boot. I'd appreciate any advice about next steps for tracking down the problem. Best, -- Joe Hickey -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]