On Friday 22 February 2019 00:04:10 Rafael Skodlar wrote: > On 2/21/19 6:27 PM, Gene Heskett wrote: > > On Wednesday 20 February 2019 17:00:19 Gene Heskett wrote: > >> On Wednesday 20 February 2019 16:37:06 Przemek Klosowski wrote: > >>> On Wed, Feb 20, 2019 at 1:53 PM Gene Heskett > >>> <ghesk...@shentel.net> > >> > >> wrote: > >>>> Thought maybe I'd see if my memory (in the machine, I know /mine/ > >>>> is shot) > >>>> was getting finicky. And the uptimes on this D525MW board haven't > >>>> been that great recently, but I reboot and choose memtest86 from > >>>> the grub menu, and it advises the mem is wrong, and reverts to > >>>> the grub menu in about 5 seconds. > >>>> > >>>> Run synaptic, see there is a slightly newer version available > >>>> under a slightly different name, but installed, it obviously > >>>> needs someone 100% familiar with the map available just to run > >>>> it. > >>>> > >>>> The msg at the top of the screen is wrong address, 0x99100, > >>>> 0x8F000 > >>>> > >>>> And it reverts to the grub menu in about 5 seconds. > >>> > >>> Memtest boots and runs as the only program on the system; 'revert > >>> to grub' is probably memtest crashing and rebooting the system. > >> > >> Makes sense. > > > > After giving it a good D&C, even wiped the contacts with contact > > cleaner, > > Do not use contact cleaner for electronics. It's not good in my > experience and prohibited in Computer History Museum for good reason. > > > reset the bios to defaults and rekilled the hypertheading, no change > > in anything. Still boots 3.4.9 like it should. Give up, wondering if > > the low memory msgs is telling me the cpu cache is dead? So I give > > up there and continue with the new build. write a 5i25-7i76-x2.bit > > to the 5i25.powerdown reboot, power up and verify it, good. The > > 7i76 with the same dble male cable I've used for yonks, even try 2 > > more off the wall cables, both leds on the 7i76 are lit. w1, w2 > > right hand position because I've a 5 volt hooked up for the logic > > stuffs, and an isolated 15 volt supply on the field power hookups. > > But the leds are lit normally. But nothing in dmesg indicates > > sserial is running, and the exit message when I try to run linuxcnc > > -l makes no sense. > > > > > > Its as if the hal file has no linkage back to the ini file to get > > setp stuff of the [JOINT_0]SCALE values for a setp > > stepgen.0.position-scale. > > > > And my logins are crippled, can't highlight slide a copy/paste, > > mouse clicks comeout as data echo's on the command line. > > > > Started another terminal, logged into it now I can copy/paste > > gene@shop:~$ linuxcnc -l > > LINUXCNC - 2.8.0-pre1-4590-g584314c > > Machine configuration directory > > is '/home/gene/linuxcnc/configs/6040-5i25-7i76' > > Machine configuration file is '6040-5i25-7i76.ini' > > Starting LinuxCNC... > > . > > Found file(REL): ./6040-5i25-7i76.hal > > ./6040-5i25-7i76.hal:107: parameter or pin > > 'stepgen.0.position-scale' not found > > Shutting down and cleaning up LinuxCNC... > > line 107 of that hal: > > setp stepgen.0.position-scale [JOINT_0]SCALE > > > > It exists in the ini file. > > > > So something is fubar. memtest86 won't run from grub, claims low > > memory is too small, crashes and reboots to grub in 4 secs or so. > > dmesg looks pretty normal. Except no hint of the 7i76's presence can > > be detected. > > BIOS may have an option to test the memory. It checks certain > addresses to make sure memory is there in the first place. > > > Educated guesses? > > > >>> I hmave never seen it behaving this way: even with bad memory I > >>> have only seen it report errors while still running. > >>> This may be actually good news: it's possible that your memory is > >>> so bad that even the tiny region from which memtest runs is > >>> hopelessly corrupt. Did you try re-seating the DIMMs? > > > > Yes, but just 1, 2gig dimm. Several times. I haven't retrieved the > > other box for test parts yet. > > > >> Thats this evenings project after i get the missus fed. > > > > Turned into the next days project. Legs/feet played out last night. > > And I haven't really learned much. I jacked the cards up a half inch > > so the power supplies would fit under the cards with 1/4" to spare & > > hooked up the power supplies. Not much use doing anything else till > > the cards talk to me. And the 7i76 is muted. > > > > Just prowling the net. looking for someplace to src a couple sticks > > of memory for one of these intel D525MW atom motherboards, and all > > the usual businesses have dried up, not willing to talk to a > > customer unless you have a business account with them. > > > > What I want is a couple 2Gb sticks of dimm, only 800 mhz so both > > slow and old, lappy style, to fit the above motherboard. Where are > > you folks getting your stuff these days? > > > > Thanks all. > > > > Cheers, Gene Heskett > > You still don't know for sure if the memory is bad. Have you swapped > DIMMs among themselves to see if the problem moves to different > address? > > Our local store in San Jose, CA seem to have what you are looking for: > > https://www.frys.com/search?search_type=regular&sqxts=1&cat=&query_str >ing=DIMM+memory&nearbyStoreName=false > > Surplus stores are disappearing in Silicon Valley so it's not easy to > find old components these days. Best other place for electronics is > https://anchor-electronics.com they still carry S-100 bus cards and > components to build them, so there! > > In any case, Gene try to start with the minimal system to test basics: > motherboard, PSU, keyboard, video connection, Linux in USB memory or > CD (if you have such a drive) is enough to start. Unplug all other > interfaces to eliminate their possible interference in troubleshooting > steps. > > BIOS generates beeps or diodes indicate hardware errors in some cases. > Check MOBO manual. > > Good luck,
I have, no beeps. And no memory error is reported because it doesn't run, it crashes & restarts grub., it doesn't run memtest86, claiming not enough low memory, So I've gambled on 4 more of them just for testing, but they are faster, 1066 vs the oem 800's. Should be here Monday. memtest86, installed from the wheezy lcnc install, does run on these things, I've see it many times. Heck I even found new mobo's on ebay tonight. So if this board is toast, I'm still not quite dead in the water. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
