[weblacky]

Standard SGI PROM Resolution is 1280x1024 @ 70Hz (maybe 75Hz),

That's a big "no", poops. 60hz for sure.

I'm afraid you're pushing ahead a false narrative without support:

1. If you're claim were true (for him), then his LCD wouldn't have fallen "out of range".  All modern LCDs understand VESA 1280x1024 @ 60Hz, (that are large enough to be at least native 1280x1024 capable or better). The OP claims his monitor "errored", that wouldn't have happened at the standard 60Hz...it could very well have happened on a HIGHER refresh, as that is abnormal for a limited "modern", non-multisync capable, LCD. Which is why I proposed it.  Plus LCDs were extremely rare when the O2 came out, most people still had CRTs and 70hz or faster was more the norm for driving CRTs, hence the defaults.

2. This document claims my information is correct and it could be set as HIGH as 76Hz for 1280x1024, but likely defaults to 75Hz (printed page 61, for your reference): https://bukosek.si/hardware/collection/s...report.pdf

3. The O2 certainly does output SOG all the time, and cannot be turned off by known means, if you have evidence of a SOG disable feature please present it so I can finally stop having to read more than my fair share of "SOG stripping" idea posts over the years for O2 (by external means)...if there was a "known way" of disabling SOG, we'd use it.  Just like the Indy, it outputs both, pin cutting won't help.  That's why I advised just using the SOG signal, rather than trying to find an SOG tolerant monitor that used H/V sync only, (lack of good documentation).

4. Please instruct me how I can lower my resolution for Irix in PROM, I'd love to be able to easily solve the issues of people who post all the time on the forum who have accidentally set their OS resolution out of range in Irix and now cannot get it to stop.  Whenever someone suggests going into single user mode in the PROM and runs setmon to correct it, it never seems to hold for them once they login to the desktop session...so we go through this big thing of them logging into a serial terminal while running X and trying to setmon via serial while X is running on the blanked, out-of-range, screen and everything is super hard now.  If irix just took its resolution from a ENV variable in the PROM, that would be heaven and a heck of lot simpler to fix.  Please provide anything you can on this topic, it would greatly help others in the forum.



Also, I don't know any real argument to support why these old PROMs are superior to modern PC Firmware (CSM/UEFI), as ample examples exist for modern PCs for the amount of customization and alteration of system functions with regards to: Boot options, Add-in ROMs, thermal options, fan curves, lighting, memory speeds and tweaks, CPU multiplier and voltage settings, sleep or low-power support/tweaks, most have native file browsing/access for exFAT, FAT16, FAT32, and some have more support (NTFS) for file selection, and integrated peripheral behavior options - just to name some off the top of my head.  SGI PROM has a hard to use date command, EFS/XFS support, some ENV set commands, and a few diskless/netboot options, plus some have a high vs low res PROM graphics mode (or headless)...and they can load the kernel to boot strap (same as UEFI can)...perhaps a few more options. What did I miss?

Also you've misread my CD burning suggestion to somehow imply Irix has a single CD. That claim is false and unsupported by the thread text (not what the text of this post says). I mentioned "Irix's CDs are not normal" (plural), I said, DISK AT ONCE...you know DAO mode, for the burning profile/technique. So there also that...for some odd reason. But, if you're a fan of using TRACK AT ONCE (TAO) mode for Irix disks then that's cool, whatever works for you.  Disk At Once mode works for me.