Subj : USB locking up To : Ky Moffet From : Barry Martin Date : Fri Sep 11 2020 08:01:00 Hi Ky! > > A while back we were talking about my system locking up when a USB > > device was inserted and a couple of things to check. Battled with > > the Round TuIts, But Firsts, etc. You had given a link which > > suggested going in to the BIOS to disable the Marvell SATA ports and > KM> I did? :) > Sure; remember when you had amnesia?! KM> Is that what I forgot?? We don't recall now... > > > Currently trying an option "ASMedia USB 3.0 Battery Charging > > Support". Default is off (disabled); trying 'enabled' only because it > > seems to be the only option having anything to do with USB other than > > legacy and disabling. Plus the power aspect seemed a 'maybe': no > > surge of power when plugging in a thumbdrive but maybe this option > > would act like a slow-blow fuse and let whatever is occasionally > > locking the system settle down. > KM> Might be letting it draw more power than spec. > That was more or less my consideration for trying. Did try after > changing the setting; need to try again -- haven't needed to insert a > thumbdrive or other USB device so forget. (Could try now but if the > system locks up sort of a pain to recover this message.) KM> Not so sure putting MORE juice into a possibly-failing circuit is KM> such a good idea... BTW did you ever mention the make and model KM> of this board? Agree on your consideration of adding current is potentially a bad idea. OTOH could be a good idea if the cause of the lockup was a voltage drop when something inserted. Didn't work, or at least there was stil a lock up so turned the option back off. The motherboard is an ASUS M5A97 R2.0. Wandering the web have found others with the same problem. Stuff about "LLC" -- Load Line Calibration -- and "FSB" -- Front Side Bus ==> carry data between the central processing unit (CPU) and a memory controller hub, known as the northbridge. The LLC stuff sounds like a possibility only because deals with voltage. which _may_ be the USB lockup. From what I can figure out appears the BIOS is set correctly so didn't fiddle. FSB doesn't sound right: USB stuff is Southbridge. Maaaybeee the system gets confused sometimes when something new is plugged in. > KM> Mine that has the defective southbridge circuit (that cooked > KM> several capacitors) continues to be just fine, so long as I don't > KM> plug in USB anything!! > Just like mine! Don't plug in a USB device and no lock ups! KM> Amazing! And so far thas worked every time! BTW, doesn't seem to matter where I plug in something, could have a lock up. Normally plug in thumbdrives into the front panel because easier. Have also plugged into two different powered USB Hubs and had lockups. The Hubs were swapped out: I thought maybe the first one as faulty. Plugged in to the same rear panel port via extension cable. The cable has probably been moved to a different port over time. > Considering/wondering if a USB add-on card would work? By-pass the > touchy Southbridge circuitry. USB add-on card plugs into PCI/PCie -- > not sure what that gets controlled by. ...Oh: "PCIe function comes > from the Southbridge microcontroller". Well, that doesn't sound like a > workaround. OTOH might be worth a try: signal to a different path; a > card I have the power seems to be supplied directly by the PSU as > opposed to from the motherboard and possibly those bad capacitors. KM> Nope, it doesn't bypass -- USB is still USB, apparently. In fact KM> my add-on card (added since the board doesn't natively do USB3) KM> was the first set of ports to fail. Darn. By what I was reading sort of thought so: PCI to Southbridge, so if Southbridge is the problem not bypassing. > KM> Right now it's hosting the old original > KM> PCLOS setup, which gets used as the #2 channel for summer > KM> baseball ... > Better hurry: football season is starting! KM> Not at my house... Football is the poor relation, and it's become KM> so structured and predictable that it's no longer interesting. KM> And that was before all the secondary stupidity... Right: should keep the games and political ideologies separate. > KM> ... so I can have two games going at once, since I haven't > KM> figured out how to get the Dell with the updated PCLOS to speak > KM> to a 2nd monitor. It has a vidcard and onboard video, tho not > KM> sure both can be convinced to work at the same time. > Seems to 'depends'. I've usually used a video card with capabilities of > running two monitors. ...Seem to remember most motherboards I've worked > with here allow either the onboard video -or- run the daughtercard. KM> So I decided must be the case, tho it's not universal -- common KM> enough for laptops to be able to display own screen and out via a KM> port. Tho not sure how it's set up -- but I've seen laptops that KM> insist they have both onboard and dedicated video, and both work KM> simultaneously. I can sort of see that as a 'speciality' of laptops: at a presentation need to see what's on the laptop screen and possibly mirror to another display for the group. KM> Which would be the same situation as with the Dell -- it has KM> both. But maybe not the required BIOS function. Next time I KM> reboot (silly kernel updates) I'll have to look in there. BIOS update too? ...Well, a little Google-fu and found this: https://www.youtube.com/watch?v=ZkK8mY1ZLSA The Dell support video did Windows; Ubuntu is Settings > Devices > Displays. Think that's it: only one monitor connected but at one time did have two. (Two was nice, just this desk-with-hutch doesn't make it physically handy.) ¯ BarryMartin3@ ® ¯ @MyMetronet.NET ® .... Where is the scientific community I hear about? Can anyone live there? --- MultiMail/Win32 v0.47 þ wcECHO 4.2 ÷ ILink: The Safe BBS þ Bettendorf, IA --- QScan/PCB v1.20a / 01-0462 * Origin: ILink: CFBBS | cfbbs.no-ip.com | 856-933-7096 (454:1/1) .