I keep getting the following error messages during bootup with kernel 2.6.23.12 : scsi 4:0:0:0: CD-ROM TSSTcorp CDDVDW TS-L633A UO00 PQ: 0 ANSI: 5 ata3.00: qc timeout (cmd 0xa0) ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen ata3.00: (irq_stat 0x40000001) ata3.00: cmd a0/00:00:00:00:20/00:00:00:00:00/a0 tag 0 cdb 0x0 data 0 res 51/60:03:00:00:00/00:00:00:00:00/a0 Emask 0x5 (timeout) ata3: soft resetting port ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata3.00: configured for PIO4 ata3: EH complete The error repeats many times and it takes about 10 minutes for the box to boot. If I unplug the DVD drive the problem naturally disappears. The machine is an Intel SR1530SH. Below is the output from lspci : 00:00.0 Host bridge: Intel Corporation Server DRAM Controller 00:01.0 PCI bridge: Intel Corporation Server Host-Primary PCI Express Bridge 00:19.0 Ethernet controller: Intel Corporation 82566DM-2 Gigabit Network Connection (rev 02) 00:1c.0 PCI bridge: Intel Corporation PCI Express Port 1 (rev 02) 00:1c.4 PCI bridge: Intel Corporation PCI Express Port 5 (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) 00:1f.0 ISA bridge: Intel Corporation LPC Interface Controller (rev 02) 00:1f.2 SATA controller: Intel Corporation 6 port SATA AHCI Controller (rev 02) 00:1f.3 SMBus: Intel Corporation SMBus Controller (rev 02) 01:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06) 01:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06) 03:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200e [Pilot] ServerEngines (SEP1) (rev 02) 04:02.0 Ethernet controller: Intel Corporation 82541GI Gigabit Ethernet Controller (rev 05) I've tried switching acpi off, using irqpoll, switching from AHCI to RAID in the BIOS but it makes no difference at all. I also tried kernel 2.6.21.5 (Slackware 12.0) and the problem is still there. Any ideas? Thanks Paul - 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