Cold Boot - No Display

Matutu

Matutu

Matutu

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Joined
21 Aug 2008
Posts
956
Hey All,

Have a problem with my new build specs below

570S Gigabyte Motherboard
5900X
Radeon 6900XT
64Gb Corsair Vengance 3600 RAM.
Samsung G9 ultrawide monitor

So basically if the PC is cold (off for more than 10 hours), if I press the power button, the computer boots fine, I can hear windows start through speakers, however the red VGA light stays on in the motherboard debug LED's. All I then need to do is reset the PC and it works perfectly, my monitor instantly comes up and im presented with Bios logo then windows 6 seconds later. No VGA debug light also.

Attempted fixes have been from research :

1. Disable Windows Fast Boot
2. Change one of the PCI connectors to a different rail on PSU (the GPU has 3x8pin connectors)
3. Remove CMOS battery and replace on motherboard.

However none of these have worked and very hard to test as I need to leave overnight to see success or not.

Once the PC is on its perfect, zooming through benchmarks and gaming so I do not think the GFX card is at fault.

The connection between monitor and card is a single 1.4 DisplayPort.

Any ideas would be appreciated.

Thankyou.
 
I had a similar issue with my Asus PN50 using display port.

I updated drivers and disabled fast boot in the BIOS but my fix was to disable fast boot (fast start up) in Windows 10.
 
Thanks dude.

Should have put I updated all bios and drivers etc.

Couldn’t see a option in the gigabyte Bios for fast boot, however did disable CSM.

Still no change.
 
When you are turning on the PC, is the monitor in power save mode? If so, try waking the monitor before turning on the PC (pressing a menu button works with most monitors I've come across, not sure about the Samsung). Could be the BIOS isn't waiting long enough for the monitor to come out of powersave before deciding it isn't there.

Have you tried just disconnecting and reconnecting the DisplayPort cable rather than resetting the PC? Tried a different cable? Tried an HDMI cable instead (if the monitor has an HDMI port)?
 
VersionMonkey said:
When you are turning on the PC, is the monitor in power save mode? If so, try waking the monitor before turning on the PC (pressing a menu button works with most monitors I've come across, not sure about the Samsung). Could be the BIOS isn't waiting long enough for the monitor to come out of powersave before deciding it isn't there.

Have you tried just disconnecting and reconnecting the DisplayPort cable rather than resetting the PC? Tried a different cable? Tried an HDMI cable instead (if the monitor has an HDMI port)?
Click to expand...

Yep that works! If I press the button just before booting the PC the VGA debug light stays off and the monitors show the Bios logo. Any idea how to make this a permanent fix lol.
 
Matutu said:
Yep that works! If I press the button just before booting the PC the VGA debug light stays off and the monitors show the Bios logo. Any idea how to make this a permanent fix lol.
Click to expand...


It's the power saving features in the monitor doing it, go into the settings for the monitor and turn off all the power saving features and it will stop the monitor going into deep sleep that doesn't wake it when posting or if the computer goes into sleep mode in windows for a long time and same thing no monitor when windows comes out of sleep unless you turn it on and off the monitor or unplug the video cable and plug it back in. There is a few places to turn that off on a samsung monitor not just one place. Then you will find if the montitor is off for long time the led on the front will flash, if it stays solid means you still have some power saving modes on and will do the same error on post when the led is solid and been off a long time.

Once you set the monitor right and all off power saving eco modes you will not have that problem anymore.


Known issue on the new monitors with extreme power saving options.

Same here as you will see and I had same issue too.. :- https://forums.overclockers.co.uk/threads/samsung-monitor-doesnt-automatically-turn-on.18937543/
 
Purgatory said:
It's the power saving features in the monitor doing it, go into the settings for the monitor and turn off all the power saving features and it will stop the monitor going into deep sleep that doesn't wake it when posting or if the computer goes into sleep mode in windows for a long time and same thing no monitor when windows comes out of sleep unless you turn it on and off the monitor or unplug the video cable and plug it back in. There is a few places to turn that off on a samsung monitor not just one place. Then you will find if the montitor is off for long time the led on the front will flash, if it stays solid means you still have some power saving modes on and will do the same error on post when the led is solid and been off a long time.

Once you set the monitor right and all off power saving eco modes you will not have that problem anymore.


Known issue on the new monitors with extreme power saving options.

Same here as you will see and I had same issue too.. :- https://forums.overclockers.co.uk/threads/samsung-monitor-doesnt-automatically-turn-on.18937543/
Click to expand...

Annoyingly been right through and the G9 seems to now have any power saving modes etc like this :confused::confused:

The closest is a time Eco off function however this is already disabled.
 
Matutu said:
Annoyingly been right through and the G9 seems to now have any power saving modes etc like this :confused::confused:

The closest is a time Eco off function however this is already disabled.
Click to expand...

It's more than one place to turn off all the eco modes/power saving modes. Also make sure you are on the latest firmware for the monitor. Just go threw all the menu options and turn off anything related to off timers and power saving/eco modes , make sure to click the settings some look off when they are not and have a timer set so set timers off. I'm not near my monitor to help with it just go threw all the menus and make sure all is off as I said known issue and thats how it is fixed, I remember oen being in a really strange place on the menu and didn't make sense to be there and should have been elsewhere.

Look for something called Smart Eco Saving+ too and anything that says off timers make sure it is set to off and no time set.

Also make sure motherboard is on latest bios too as some motherboards also caused this issue but was fixed in the bios. But your issue sounds like the power saving issue in the monitor settings, remember more than one place in the monitor menus to turn it all off.
 
Last edited:
Matutu said:
Yep that works! If I press the button just before booting the PC the VGA debug light stays off and the monitors show the Bios logo. Any idea how to make this a permanent fix lol.
Click to expand...

I've not found any hints of a way around it if you can't find any Eco settings to turn off.

I don't know if a "power-saving" socket strip that cut power to the monitor when the PC turns off would work. I guess it would depend on whether the monitor turns on faster than it comes back from powersave; which seems unlikely.
 
Purgatory said:
It's more than one place to turn off all the eco modes/power saving modes. Also make sure you are on the latest firmware for the monitor. Just go threw all the menu options and turn off anything related to off timers and power saving/eco modes , make sure to click the settings some look off when they are not and have a timer set so set timers off. I'm not near my monitor to help with it just go threw all the menus and make sure all is off as I said known issue and thats how it is fixed, I remember oen being in a really strange place on the menu and didn't make sense to be there and should have been elsewhere.

Look for something called Smart Eco Saving+ too and anything that says off timers make sure it is set to off and no time set.

Also make sure motherboard is on latest bios too as some motherboards also caused this issue but was fixed in the bios. But your issue sounds like the power saving issue in the monitor settings, remember more than one place in the monitor menus to turn it all off.
Click to expand...

Been right through the monitor and cant find anything, also nothing in manual. However I attached a old 22" panel I had and behold same issue on cold boot.... so has to be something in the Bios, this is already on the latest Bios version. Anything else where it could be a BIOS setting?

Appreciate the help.
 
Matutu said:
Been right through the monitor and cant find anything, also nothing in manual. However I attached a old 22" panel I had and behold same issue on cold boot.... so has to be something in the Bios, this is already on the latest Bios version. Anything else where it could be a BIOS setting?

Appreciate the help.
Click to expand...

That is strange. Still using DisplayPort with the 22"?

We have similar configurations - Gigabyte X570S (Master in my case, but on the original F1 BIOS) + 6900XT and my monitor is also connected with DisplayPort (albeit the monitor only supports DP 1.2). I don't get the behaviour you do. Can't think, off the top of my head, of any BIOS settings I might have changed that could have a bearing on what you are seeing. Do you have CSM enabled or disabled (can't remember what the default was, but I would have disabled that for sure.)?
 
Matutu said:
Been right through the monitor and cant find anything, also nothing in manual. However I attached a old 22" panel I had and behold same issue on cold boot.... so has to be something in the Bios, this is already on the latest Bios version. Anything else where it could be a BIOS setting?

Appreciate the help.
Click to expand...


Check if the graphics card has a VBIOS update. Like how the 3080ti and 3060 had to be updated :- https://nvidia.custhelp.com/app/answers/detail/a_id/5233/


Also try setting the monitor to display port 1.4 in the menu and not auto, or 1.2 etc till you find the one that stops the issue. But should be on 1.4 if using that monitor to be able to use the full resolution and the 240hz mode and hdr.
 
I have CSM disabled.

wondering if I should try a HDMI cable, however my DisplayPort cables are already run before the plasterboard lol.

Also I run at 244hz so unsure if HDMI can handle that.

so bizarre why this issue is happening. Was hoping would be a BIOS option.
 
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