On Mon, Jul 28, 2008 at 17:48:42 +0300, Anton Liaukevich wrote: > Florian Kulzer wrote: >> On Sun, Jul 27, 2008 at 23:05:15 +0300, Anton Liaukevich wrote: >>> Florian Kulzer wrote: >>>> On Sun, Jul 27, 2008 at 16:57:19 +0300, Anton Liaukevich wrote: >>>>> Florian Kulzer wrote: >>>>>> On Wed, Jul 23, 2008 at 20:59:09 +0300, Anton Liaukevich wrote: >>>>>>> Anton Liaukevich wrote: >>>>>>>> In several days I discovered that DMA is turned off on my >>>>>>>> HDD (fsck sayed it while Debian booting). Please, help me >>>>>>>> turn on DMA mode. >>>>>>>> >>>>>>>> My hardware: >>>>>>>> motherboard: Epox 8RDA3I rev 3.3 (nForce 2 Ultra) >>>>>>>> hdd: WD1200JB (ide, 120gb) >>>>>>>> cpu: Sempron 2200 (k7) >>>> [...] >>>> >>>>>>> Today I upgraded my linux kernel to 2.6.25-2-686, but problem >>>>>>> hasn't been solved yet. >>>> [...] >>>> >>>>> I installed hdparm long ago and it says that dma if off, moreover >>>>> hdparm can't turn it on: >>>>> >>>>> leva:/home/anthony/admin# hdparm -d1 /dev/hda >>>>> >>>>> /dev/hda: >>>>> setting using_dma to 1 (on) >>>>> HDIO_SET_DMA failed: Operation not permitted >>>>> using_dma = 0 (off) >> >> [...] >> >> Hopefully there will be an error message somewhere that clears this up a >> little. Try to reboot and then run: >> >> dmesg | grep grep -Ei 'ata|ide|amd74xx' >> >> Furthermore, there could be relevant messages very early in the boot >> process; you might have to use ScrollLock plus pen and paper to catch >> them (or set up logging to a serial console). >> > I have tried command "dmesg | grep -Ei 'ata|ide|amd74xx'", suggested by > you (after rebooting and logging in console (nor kdm that I use > usually)). > Please read output in the attachment. Thank you for help.
[...] > [ 1.642452] Uniform Multi-Platform E-IDE driver OK, that seems to come from ide_core. > [ 1.642530] ide: Assuming 33MHz system bus speed for PIO modes; override > with idebus=xx > [ 1.643173] Probing IDE interface ide0... > [ 2.058474] hda: WDC WD1200JB-00EVA0, ATA DISK drive > [ 2.730008] Probing IDE interface ide1... > [ 3.592777] hdc: SONY CD-RW CRX320E, ATAPI CD/DVD-ROM drive > [ 4.264276] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 > [ 4.264276] ide1 at 0x170-0x177,0x376 on irq 15 > [ 13.612015] hdc: ATAPI 52X DVD-ROM CD-R/RW drive, 2048kB Cache Some driver (ide_generic?) takes control of the devices before libata is loaded. Check the output of "cat /proc/interrupts" to see which module has IRQs 14 and 15. > [ 14.218581] libata version 3.00 loaded. > [ 14.740018] NFORCE2: IDE controller (0x10de:0x0065 rev 0xa2) at PCI slot > 0000:00:09.0 > [ 14.740306] NFORCE2: port 0x01f0 already claimed by ide0 > [ 14.740378] NFORCE2: port 0x0170 already claimed by ide1 The nforce2 driver cannot take ove rthe devices => no DMA. I can think of a few more things to try, but I don't know how "safe" they are: - put amd74xx as the first non-comment line into /etc/modules - boot with "blacklist=ide_generic" appended to the kernel command line - likewise, try "libata.dma=3" at boot (may be dangerous) - check the kernel documentation for "libata.force=..." (can be really dangerous) - check if the amd74xx module is included in your initrd: zcat /boot/initrd.img-$(uname -r) | cpio --quiet -t | grep -E '(ide|ata|amd)[^/]*\.ko' - build your own kernel with amd74xx compiled in -- Regards, | http://users.icfo.es/Florian.Kulzer Florian | -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
