Hmm, that's curious. I do have 4 of these with slightly different configurations (even one that is tandem badged), so I could see if the bus speed is the same or different across all of them. I realize it might not be all that valuable other than to satisfy some curiosity, but an interesting data-point nonetheless.
As far as troubleshooting goes, I'll try and switch to the primary interface to see if it makes a difference (maybe we can rule something out?). I was only using the secondary so I wouldn't need to employ an external transceiver. -Jesse On Mon, Jul 18, 2016 at 2:46 AM, Miod Vallat <[email protected]> wrote: >> It crashed again last night so I rebuilt the kernel with your patch. >> Both hpc0 and hpc1 now report 25 mhz. I've attached the full dmesg >> below for reference. > > I was wondering if your system had a 33MHz GIO bus and was incorrectly > using the 25MHz settings. But since the diff now reports 25MHz, the > settings do not change and the diff doesn't change anything. > > I am a bit surprised, because here my R5000 Indy has a 33MHz GIO bus > while all the R4000/R4400 Indys have 25MHz GIO buses, so I would naively > expect your R5000 Challenge S system to also use a 33MHz flavour; but > there might be good reasons for things to be this way (also, maybe SGI > used 25MHz buses for the R5000 model initially, and only switched to > 33MHz months or years later). > > Back to square one...
