Hi everybody, With SuSE 9.1 and the SuSE supplied kernel, I was able to use my Plextor 712 SATA DVD burner - no problems. However, that software would frequently lockup on me for no apparent reason. I've upgraded quite recently to SuSE 9.2, kernel version 2.6.8-24.11-smp, and the lockup problem has ceased, however, I can no longer access my DVD burner. When the kernel boots and identifies the devices, the DVD burner is not identified as it was with SuSE 9.1. All other system devices work flawlessly. I am at a loss as to how I should proceed to debug this problem. Any advice would be most appreciated. I'm supplying some information that I think should be useful for debugging this problem. My system components: 2 x AMD Opteron 244 MSI K8T Master2 FAR Motherboard 1 GB memory (Kingston) 1 SATA Disk - Maxtor 6B200S0 (200 GB) 1 SATA DVD Burner - Plextor PX-712SA 1 SCSI tape drive 1 SCSI Hard drive - Maxtor ATLAS10K5_73WLS (73 GB) 1 SCSI DVD Reader - TOSHIBA DVD-ROM SD-M1401 Onboard sound, network, usb, parallel, serial The output of 'lspci' is shown below. 0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8385 [K8T800 AGP] Host Bridge (rev 01) 0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge [K8T800 South] 0000:00:06.0 Ethernet controller: Linksys NC100 Network Everywhere Fast Ethernet 10/100 (rev 11) 0000:00:07.0 SCSI storage controller: Adaptec AIC-7892A U160/m (rev 02) 0000:00:0b.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5705 Gigabit Ethernet (rev 03) 0000:00:0f.0 RAID bus controller: VIA Technologies, Inc. VIA VT6420 SATA RAID Controller (rev 80) 0000:00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06) 0000:00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 0000:00:10.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 0000:00:10.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 81) 0000:00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86) 0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [K8T800 South] 0000:00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60) 0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 0000:00:19.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 0000:00:19.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 0000:00:19.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 0000:00:19.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV200 QW [Radeon 7500] Also, here are the salient portions of the 'dmesg' output: libata version 1.02 loaded. sata_via version 0.20 sata_via(0000:00:0f.0): routed to hard irq line 9 ata1: SATA max UDMA/133 cmd 0xB800 ctl 0xBC02 bmdma 0xC800 irq 169 ata2: SATA max UDMA/133 cmd 0xC000 ctl 0xC402 bmdma 0xC808 irq 169 ata1: dev 0 cfg 49:0f00 82:0000 83:0000 84:0000 85:0000 86:0000 87:0000 88:0007 ata1: dev 0 ATAPI, max UDMA/33 ata1: dev 0 configured for UDMA/33 scsi1 : sata_via ata2: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4043 85:7c69 86:3e01 87:4043 88:407f ata2: dev 0 ATA, max UDMA/133, 398297088 sectors: lba48 ata2: dev 0 configured for UDMA/133 scsi2 : sata_via Vendor: ATA Model: Maxtor 6B200S0 Rev: BANC Type: Direct-Access ANSI SCSI revision: 05 SCSI device sdb: 398297088 512-byte hdwr sectors (203928 MB) SCSI device sdb: drive cache: write back sdb: sdb1 sdb2 sdb3 sdb4 Attached scsi disk sdb at scsi2, channel 0, id 0, lun 0 Thanks in advance for any help/assistance that you may provide. Andy -- Andy Stewart, Founder Worcester Linux Users' Group Worcester, MA USA http://www.wlug.org