On Sb, 26 dec 20, 17:19:32, The Wanderer wrote: > > With the new GPU in place, I get video output during POST and in the > BIOS (yes, this machine is old enough that it doesn't have a UEFI) > without problems. That demonstrates that the GPU isn't dead on arrival, > and that signal is getting through to the monitor on a basic level. At this apoint you might want to query your monitor for the resolution used, might be helpful in case you want to configure grub with a known working resolution (as per other suggestions). > However, as soon as the machine tries to hand over control to the > bootloader, I get a hard freeze; the screen goes black (albeit I think > still with backlight), the keyboard light toggle keys stop responding, > and the GRUB menu never appears. Waiting a long time doesn't change > anything; even after roughly half an hour of waiting, pressing the Power > button once (no press-and-hold) shuts the system off immediately, which > indicates that the system hasn't progressed much (if at all) past early > boot. Maybe changing some BIOS setting could help. The suggestion to try a live image is also good. As far as I know the Debian Installer is using very basic VGA graphics, for maximum compatibility, so result might be different than a full live system. Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser
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