On 03/09/07, Tejun Heo <htejun@xxxxxxxxx> wrote: > Eddie Hung wrote: > > I am pursuing another possibility: the CF card is not a genuine > > Sandisk one at all, especially as it was off eBay! I compared my > > hdparm -I with the one in the thread above (which as I've found out is > > a Sandisk Extreme II 4GB) and there are big differences, namely the > > model number, serial number and firmware version. > > > > This might explain everything! > > We still need to fix your device. :-) > > -- > tejun > Uhm.. it seems like I spoke too soon! I have now acquired a Sandisk Extreme III 8GB CF card, from a reputable source, but it doesn't support UDMA as the Extreme IV card was supposed to... and this means I'm getting MWDMA again - and the same timeout problems! I had previously blamed the timeout problems on it being a completely naff card which wasn't standards compliant, but now I know this can't be the case. Here is the hdparm: /dev/sda: CompactFlash ATA device, with removable media Model Number: SanDisk SDCFX3-8192 Serial Number: 019324G2207I5851 Firmware Revision: HDX 4.03 Standards: Supported: 4 Likely used: 4 Configuration: Logical max current cylinders 15880 15880 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16007040 LBA user addressable sectors: 16007040 device size with M = 1024*1024: 7815 MBytes device size with M = 1000*1000: 8195 MBytes (8 GB) Capabilities: LBA, IORDY(may be)(cannot be disabled) Standby timer values: spec'd by Vendor R/W multiple sector transfer: Max = 4 Current = 0 DMA: mdma0 mdma1 *mdma2 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: Write cache * CFA feature set * CFA advanced modes: pio5 *pio6 Note that it does identify PIO5 and PIO6 (answering my previous question), with PIO6 even starred. I got about 9MB/s under hdparm, too. However, the timeouts remain, I triggered it again by doing a mkfs.ext3. Any ideas? Thanks, Eddie - 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
