Hi, I suffer from unreliable cdrom operations (failing DAE and burn sessions) with the openSUSE 2.6.18.8-0.7-bigsmp kernel. Additionally, the syslog is continuesly spammed with: Feb 12 00:03:22 kernel: hdc: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request. Feb 12 00:57:52 kernel: hdc: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request. Feb 12 01:36:21 kernel: hdc: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request. Feb 12 01:38:49 kernel: hde: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request. Feb 12 08:06:07 kernel: hde: cdrom_pc_intr: The drive appears confused (ireason = 0x01). Trying to recover by ending request. I drove that devices on a pdc20268 based Promise Ultra TX/2 100 card for some time, which had some IDE/ATAPI issues documented. After exchanging that PCI card with a "Silicon Image PCI0680 based one, the problem persists. Is there any firmware/atapi protocol problem known with these drives? These are the offenders: 42: IDE 02.0: 10602 CD-ROM (DVD) [Created at block.222] UDI: /org/freedesktop/Hal/devices/storage_model_PLEXTOR_DVDR_PX_608AL Unique ID: 90A1.yYhZwSaKZZ6 Parent ID: ejN_.zzJBQoyZsp8 SysFS ID: /block/hdc SysFS BusID: 1.0 SysFS Device Link: /devices/pci0000:00/0000:00:0e.0/0000:02:06.0/ide1/1.0 Hardware Class: cdrom Model: "PLEXTOR DVDR PX-608AL" Vendor: "PLEXTOR" Device: "DVDR PX-608AL" Revision: "1.01" Serial ID: "GDDL000676UE" Driver: "SiI_IDE", "ide-cdrom" Driver Modules: "siimage", "ide_cd" Device File: /dev/hdc Device Files: /dev/hdc, /dev/disk/by-path/pci-0000:02:06.0-ide-0:0 Device Number: block 22:0 Features: CD-R, CD-RW, DVD, DVD-R, DVD-RW, DVD+R, DVD+RW, DVD+DL, DVDRAM Drive status: no medium Config Status: cfg=no, avail=yes, need=no, active=unknown Attached to: #34 (Unknown mass storage controller) Drive Speed: 24 43: IDE 04.0: 10602 CD-ROM (DVD) [Created at block.222] UDI: /org/freedesktop/Hal/devices/storage_model_PLEXTOR_DVDR_PX_608AL_0 Unique ID: 3Ng9.rKN6BMng3oC Parent ID: ejN_.zzJBQoyZsp8 SysFS ID: /block/hde SysFS BusID: 2.0 SysFS Device Link: /devices/pci0000:00/0000:00:0e.0/0000:02:06.0/ide2/2.0 Hardware Class: cdrom Model: "PLEXTOR DVDR PX-608AL" Vendor: "PLEXTOR" Device: "DVDR PX-608AL" Revision: "1.01" Serial ID: "GGDL007101UE" Driver: "SiI_IDE", "ide-cdrom" Driver Modules: "siimage", "ide_cd" Device File: /dev/hde Device Files: /dev/hde, /dev/disk/by-path/pci-0000:02:06.0-ide-1:0 Device Number: block 33:0 Features: CD-R, CD-RW, DVD, DVD-R, DVD-RW, DVD+R, DVD+RW, DVD+DL, DVDRAM Drive status: no medium Config Status: cfg=no, avail=yes, need=no, active=unknown Attached to: #34 (Unknown mass storage controller) Drive Speed: 24 hanging on this controller (now): 44: PCI 206.0: 0180 Unknown mass storage controller [Created at pci.286] UDI: /org/freedesktop/Hal/devices/pci_1095_680 Unique ID: ejN_.zzJBQoyZsp8 Parent ID: vuMS.8LoPsVNGJbF SysFS ID: /devices/pci0000:00/0000:00:0e.0/0000:02:06.0 SysFS BusID: 0000:02:06.0 Hardware Class: storage Model: "Silicon Image PCI0680 Ultra ATA-133 Host Controller" Vendor: pci 0x1095 "Silicon Image, Inc." Device: pci 0x0680 "PCI0680 Ultra ATA-133 Host Controller" SubVendor: pci 0x1095 "Silicon Image, Inc." SubDevice: pci 0x0680 Revision: 0x02 Driver: "SiI_IDE" Driver Modules: "siimage" I/O Ports: 0x9c00-0x9c07 (rw) I/O Ports: 0x9800-0x9803 (rw) I/O Ports: 0x9400-0x9407 (rw) I/O Ports: 0x9000-0x9003 (rw) I/O Ports: 0x8c00-0x8c0f (rw) Memory Range: 0xfdfff000-0xfdfff0ff (rw,non-prefetchable) Memory Range: 0xf4000000-0xf407ffff (ro,prefetchable,disabled) IRQ: 169 (1767334 events) Module Alias: "pci:v00001095d00000680sv00001095sd00000680bc01sc80i00" Driver Info #0: Driver Status: siimage is active Driver Activation Cmd: "modprobe siimage" Driver Info #1: Driver Status: pata_sil680 is active Driver Activation Cmd: "modprobe pata_sil680" Config Status: cfg=no, avail=yes, need=no, active=unknown Attached to: #30 (PCI bridge) Any hints are highly appreciated. Pete - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html