(I am booting with init=/bin/bash to avoid any background activity.) Turning off DMA in .17 (hdparm -d0) gives the same speeds as in .19. hdparm -d in .19 reports 0 (off). Trying to enable it with hdparm -d1 gives: HDIO_SET_DMA failed: Operation not permitted
** Summary changed: - hard disk speed regression + hard disk speed regression (DMA is off) -- hard disk speed regression (DMA is off) https://launchpad.net/bugs/72255 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
