Hi, I'm running 2.4.0-test9 on an Aladdin V based mother board. The IDE interface locks up (i.e. reads/writes etc fail, drives cannot be detected when booting) and only works again after power cycling. Same problem occured with 2.4.0-test5 and up. The problem does not occur with 2.2.x kernels (2.2.14 and 2.2.17 tested) with the 1.0 beta 3 driver. The primary interface has two UDMA33 drives (both of which are automatically put into UDMA33 mode). The secondary interface has a CD-ROM drive and a Zip disk but neither are used. Unfortunatly I have been unable to determine what particular circumstaces cause the problem as it occurs infrequently (maybe after a few hours). This first signs are the following messages hda: timeout waiting for DMA ide_dmaproc: chipset supported ide_dma_timeout func only: 14 hda: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest } hda: status timeout: status=0xd0 { Busy } hda: DMA disabled hdb: DMA disabled hda: drive not ready for command ide0: reset timed-out, status=0x80 hda: status timeout: status=0x80 { Busy } ...and so on... The problem appears t only occur if I have not previously booted Windows 98. lspci reports the IDE interface as Acer Labs M5229 IDE interface (revision c1) I'm not subscribed to this list please CC any replies. David Vrabel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/