it is possible that i could have built a new 9pccpuf after the initial boot of the fs and installed it in place but had never rebooted the machine with the new kernel; but (old age memory failings notwithstanding), i don't think i did that.
FYI, i think i noticed that in ata compatibility mode vid/did is 8086/2920 and in ahci mode it shows 8086/2922. in the version of sources i have, sdata.c checks for the former and sdiahci.c checks for the latter. On Mon, Aug 19, 2013 at 9:53 AM, erik quanstrom <[email protected]>wrote: > On Mon Aug 19 12:25:33 EDT 2013, [email protected] wrote: > > Erik's explanation certainly makes sense, but here's an > > alternative possibility. In the past, I've set up the bios on > > a system a certain way, then accidentally written to > > #r/nvram (which isn't really useful on a PC), and had the > > bios reset to factory defaults. Behavior of the bios after > > writing that file is bios-dependent, but it's easy to test. > > i happen to have that machine, and i have not seen that > behavior with any version of bios up to 1.2a. > > perhaps we haven't written to #r/nvram. > > - erik > >
