Matrox G 450 bios error unable to read eeprom \ VOGONS

Matrox G 450 bios error unable to read eeprom

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First post, by cyberluke

Posted on 2021-09-07, 20:57

cyberluke Offline

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Hi, I found this BIOS guide here: https://web.archive.org/web/20080923123252/ht … ox/biosrec.html

I have this error: Unable to get EEPROM information.

Tried two different motherboards and disabled BIOS shadow caches as well asi BIOS video cache. Tried on 440BX and 430TX motherboards.

The problem I'm trying to solve is that card works with VGA, but goes to a sleep mode in a few minutes (DOS and Windows), then needs a hard reset.

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Reply 1 of 2, by cyberluke

Posted on 2021-09-07, 21:23

cyberluke Offline

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progbios -d will run correctly and dump pins to output, so eeprom can be read. It will also read serial number

Reply 2 of 2, by cyberluke

Posted on 2021-09-07, 21:44

cyberluke Offline

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Joined: 2021-05-15, 14:19
Location: Czechia

Added active fan cooling, even stock G450 PCI did not have, and sleep issue seems to be solved. The time to sleep decreased with the time PC was on and time to hard reset was shorter and shorter, which points me to overheating problem. So the fan seems to fixed that and even Lotus DOS game is working nicely. Will boot to Windows.

Still, the firmware is 1.3 and I would like to upgrade it to 1.4 or 2.0.

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