On 04/09/07 15:33:16, Kevin J. Cummings wrote:
Geoffrey Leach wrote: > On 03/28/07 11:17:33, Mikkel L. Ellertson wrote: >> Geoffrey Leach wrote: >> > My new ASUS laptop periodically takes a 30 second or so nap. [snip] I have a new laptop, from R-cubed Technologies. They are using an ASUS motherboard in it. I too am seeing these 30-second hangs, but only when I'm actively running Windows-XP Pro in a VM-Ware session (at least that's when I notice it). They are causing SSH and my Windows VPN to drop the connections due to timeouts. I've watched the speed of my disk drive drop from UDMA/133 all the way down to PIO0 (and it continues to try and drop from there, tho there is no place to go from there....) >> What does "hdparm -I /dev/sda" show? It sounds like the drive may >> have power management enabled, and is spinning down. I have just recently set: hdparm -S 0 /dev/sda Hopefully, this will keep the drive from spinning down. Do I need to put this in rc.local? RH recently removed the hdparm stuff from /etc/sysconfig....
> > hdparm (thanks for the pointer) shows that idle shutdown was
configured > for the drive. A little digging turned a two-hour idle timeout. > Curiously, the problem started after about two hours, but definetly not > idle for that time. I disabled idle timeout, and after two hours I get > the following. Repeats every 15 minutes or so. This definitely does NOT sound promising. > ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen > ata2.01: (BMDMA stat 0x64) > ata2.01: tag 0 cmd 0xa0 Emask 0x4 stat 0x40 err 0x0 (timeout) > ata2: port is slow to respond, please be patient (Status 0xd0) > ata2: port failed to respond (30 secs, Status 0xd0) > ata2: soft resetting port > ata2.00: configured for UDMA/100 > ata2.01: configured for UDMA/25 > ata2: EH complete > SCSI device sda: 195371568 512-byte hdwr sectors (100030 MB) > sda: Write Protect is off/etc/sysconfig/laptop-mode > SCSI device sda: drive cache: write back > SCSI device sda: 195371568 512-byte hdwr sectors (100030 MB) > sda: Write Protect is off > SCSI device sda: drive cache: write back
Turns out that the source of my problem was a HAL-initiated probe of the optical drive (ata2 in the above) and NOT the hard disk. You might wish to try either a blank disk in the optical drive or stopping HAL (System->Administration->System Services->Services), although the latter action has the side-effect of disabling shutdown and auto-mounting the optical drive.
Should you need to tweak the hdparm settings, you can find them in /opt/rcubed/share/fc6/etc/sysconfig/laptop-mode and /etc/sysconfig/laptop-mode
Good luck.
