Hi everybody, I often (but not every time) get the following strange message a boot concerning DMA. <4>hdb: attached ide-cdrom driver. <6>hdb: ATAPI 40X DVD-ROM drive, 512kB Cache <6>Uniform CD-ROM driver Revision: 3.12 <6>SCSI subsystem driver Revision: 1.00 <4>hdc: attached ide-scsi driver. <6>scsi0 : SCSI host adapter emulation for IDE ATAPI devices <4> Vendor: PIONEER Model: DVD RW DVR-106D Rev: 1.07 <4> Type: CD-ROM ANSI SCSI revision: 02 <4>hdb: set_drive_speed_status: status=0x58 { DriveReady SeekComplete DataRequest } <4>hda: dma_timer_expiry: dma status == 0x60 <3>hda: timeout waiting for DMA <3>hda: timeout waiting for DMA <4>hda: (__ide_dma_test_irq) called while not waiting What does it mean ? is it an hardware problem ? I use k_smp-2.4.21-121on a HT. Have the same massages with k_smp-2.4.21-144 and default dma is activated with yast for both the dvd reader and the dvd burner. here are informations about my hardware : <6>ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx <6>SIS5513: IDE controller at PCI slot 00:02.5 <6>SIS5513: chipset revision 0 <6>SIS5513: not 100%% native mode: will probe irqs later <6>SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller <6> ide0: BM-DMA at 0x4000-0x4007, BIOS settings: hda:DMA, hdb:DMA <6> ide1: BM-DMA at 0x4008-0x400f, BIOS settings: hdc:DMA, hdd:pio <4>hda: ST3160021A, ATA DISK drive <4>hdb: SONY DVD-ROM DDU1612, ATAPI CD/DVD-ROM drive <4>blk: queue c0468cc0, I/O limit 4095Mb (mask 0xffffffff) <4>hdc: PIONEER DVD RW DVR-106D, ATAPI CD/DVD-ROM drive <4>ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 <4>ide1 at 0x170-0x177,0x376 on irq 15 <4>hda: attached ide-disk driver. <4>hda: host protected area => 1 <6>hda: 312581808 sectors (160042 MB) w/2048KiB Cache, CHS=19457/255/63, UDMA(100) Thanks a lot.