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#1 2015-05-01 11:29:57

yorrd
Member
Registered: 2013-07-21
Posts: 71

PC needs two attempts to turn on

I'm starting the computer, everything sounds and looks fine, except my monitor keeps turning on and off, stating that it doesn't have input over the display port cable. When I reset the system via the button on my case, it boots correctly and the monitor turns on and behaves as usual.

Additional information:

Suspend to RAM and hibernate don't work. When I resume the system, the screen stays black until I force a reboot. There's nothing helpful in journalctl. Maybe this is related?

Nvidia 349.16-2
Linux 4.0-1 (any version after 3.18 didn't work, haven't tested before that)
UEFI boot

Any help is greatly appreciated, I'm not really sure where to look.

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#2 2015-05-01 14:43:18

Wilco
Member
Registered: 2008-11-09
Posts: 440

Re: PC needs two attempts to turn on

Not sure if this is an arch issue, because it looks like your system isn't able to get past the bios. First comes the bios/efi then the bootloader and then arch, unless your hibernating of course.

Your problem is probably hardware related to a faulty PSU or a videocard which needs to be reinserted into the PCI-e slot.

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#3 2015-05-01 21:54:54

yorrd
Member
Registered: 2013-07-21
Posts: 71

Re: PC needs two attempts to turn on

How could a faulty PSU manage to do this? I mean it reliably works the second time.

Same question basically for the graphics card. I mean why would it work the second time?

But if you're right, do you have any tips on debugging this? Any logs I could look into? Any tests I could do?

Reinserting the graphics card didn't work.

PS: The same setup used to work fine a couple of weeks ago on arch, I didn't change the UEFI, just updated a few times I guess. I tried downgrading Linux to no avail, not sure if the graphics driver has something to do with it. Could this possibly be related to the monitor being 4k and connected via displayport?

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#4 2015-05-02 11:55:53

yorrd
Member
Registered: 2013-07-21
Posts: 71

Re: PC needs two attempts to turn on

There's a workaround for me: Turn off the monitor, start, turn on the monitor. Seems to be an issue with 4k or displayport, hdmi works fine.

The other issue I explained is unrelated.

Thanks for the ideas Wilco

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