I'm hoping the cumulative wisdom of the assembled masses might be able
to figure out what I'm clearly missing, assuming there IS something I'm
missing.
I've recently assembled a new PC, with an MSI B350-Tomahawk motherboard
and a Ryzen 5 2600 CPU. (We'll skip that I ended up actually buying an
older Ryzen just to upgrade the BIOS.) The problem is that I have now
tried three different PCI-E graphics cards, and have gotten no video
signal from any of them. I do get a video signal from an ancient PCI
graphics card. One of the cards is a very old Radeon, one is a
slightly less old nVidia, and the newest is (from lspci) "Advanced
Micro Devices, Inc. [AMD/ATI] Cape Verde XT [Radeon HD 7770/8760 / R7
250X]."
What I find particularly odd is that if I log in blind, and then issue
startx, X (startkde) seems to be running fine. I ssh in from another
PC, and the X log shows the Radeon driver loading, the monitor being
recognized on the appropriate connector, the EDID received, and the
right resolution being chosen. (Even without all the AMD drivers and
firmware loaded, at least it also seemed to start with the VESA driver,
but still no output signal.)
I can easily believe the old radeon card is dead, and possibly even the
nVidia card. However, given what I see in the logs with the new radeon
card, I find it hard to believe the card is actually defective. (Just
purchased used on eBay, so I do have to admit the possibilty.)
However, I have trouble imagining what else could be the problem. I've
tried two different cables (both of which work fine for the PCI card)
but both use DVI to VGA adaptors, although I can't imagine why that
would matter now, if they worked for a different card. I have ordered
a new DVI cable to go directly from the card to the monitor, so
hopefully I'll get that and be able to test it within a few days.
Can anyone else thing of what the problem might be, and if there is any
troubleshooting I could try?
Jack
- [gentoo-user] strange problem (no video output) on new PC Jack
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