Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 09:51:39
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Ok i'm in touch with them. I checked on displayport.org and apparently the cable i was using are not certified, maybe that's the problem. My asus PG34Q isn't on the list either the lindy cable gold I was using I was thinking about getting this one : http://www.ebuyer.com/287016-startech-com-displayport-1-2-cable-with-latches-certified-2m-displ2m But what worries me is : The DP cable supports high resolutions of up to 4k x 2k (3840 x 2160) @ 60Hz I run a 3440x1440 at 100hz, will it be ok? What's your opinion guys? Thanks again
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timmyboy04
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 10:55:47
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Asryan
Ok i'm in touch with them.
I checked on displayport.org and apparently the cable i was using are not certified, maybe that's the problem. My asus PG34Q isn't on the list either the lindy cable gold I was using
I was thinking about getting this one : http://www.ebuyer.com/287016-startech-com-displayport-1-2-cable-with-latches-certified-2m-displ2m
But what worries me is : The DP cable supports high resolutions of up to 4k x 2k (3840 x 2160) @ 60Hz
I run a 3440x1440 at 100hz, will it be ok?
What's your opinion guys?
Thanks again
Check this chart:
Attached Image(s)
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Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 11:31:13
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howdy2u2
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 12:15:59
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Pretty sure it's not your new GPU, I have 980's and my monitor (same as yours) (if I understand what your "issue' is) does the same thing. It's been doing this since I got it with no ill effects. I figured it was from having the monitor OC'd and it is changing the refresh rate once it got to the desktop itself. (it's not BTW)
Boot PC............gets to desktop.........flicker/ screen flash of sorts..........all is good from there on.
If this is not what your experiencing then, carry on.............
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timmyboy04
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 12:42:40
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Asryan
Can't see the image
It's an attachment. Check here and take a look at the DP bandwidth chart.
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Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 14:10:51
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timmyboy04
Asryan
Can't see the image
It's an attachment. Check here and take a look at the DP bandwidth chart.
Oh so this one is not good, i need a DP 1.4 certified no? If someone car confirm that :) howdy2u2
Pretty sure it's not your new GPU, I have 980's and my monitor (same as yours) (if I understand what your "issue' is) does the same thing. It's been doing this since I got it with no ill effects. I figured it was from having the monitor OC'd and it is changing the refresh rate once it got to the desktop itself. (it's not BTW)
Boot PC............gets to desktop.........flicker/ screen flash of sorts..........all is good from there on.
If this is not what your experiencing then, carry on.............
Kinda, it starts just after the mb logo, flickers 3 times, then after WIndows logo, then on desktop (i think ) and over
post edited by Asryan - 2017/06/03 14:13:08
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Sajin
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 14:25:04
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timmyboy04
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 14:25:40
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Just make sure the cable is VESA certified. There is no such thing as DP 1.1, 1.2, 1.4 cables. They all support whatever your devices are using. So if a cable says 1.1 it would work fine for 1.4.
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Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 15:31:45
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maniacvvv
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 16:18:58
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Sounds like just a high refresh rate monitor and booting output (monitor/vid card output)... not the cable to me. --->No flicker after windows loads...how could it be the cable? 800x600 at 59hz.... harder than 2k or 3k with high refresh on a DP cable? nope. More like that low res is harder for the monitor, until windows loads the drivers  I can see it flicker twice on each page of the boot, at the same time/place as well... definitely the monitor trying to deal with output before windows, not the cable. Goes completely away once windows starts to load....
post edited by maniacvvv - 2017/06/03 16:40:52
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howdy2u2
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 20:12:29
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maniacvvv
Sounds like just a high refresh rate monitor and booting output (monitor/vid card output)... not the cable to me.
I can see it flicker twice on each page of the boot, at the same time/place as well... definitely the monitor trying to deal with output before windows, not the cable.
Goes completely away once windows starts to load....
^^^^ This exactly, I believe your spending money on a cable that is not going to solve your issue....................IMO unsolvable at that
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Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/03 22:50:07
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Probably but it was not doing that with my 1080, only with the ti
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maniacvvv
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Re: Screen flickering during boot after install of a new GPU
2017/06/04 01:15:36
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I agree, I did not see this with the prior card only the 1080Ti I have been watching it tonight, it appears to only happen on cold starts and happens on all my OS installs (7,7 and 10 on separate drives) But I dont see it when restarting, only cold boots. I will disconnect my second monitor tomorrow and see if it has any effect Really does appear to be some sort of issue between the card output and the monitor and refresh rates -before- entering Windows. Its not doing any damage and does not effect anything, consider it like the flicker between BIOS and windows start
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Quad5Ny
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Re: Screen flickering during boot after install of a new GPU
2017/06/04 02:42:06
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If you disable CSM the firmware on the motherboard will load a EFI module during boot (dumped from the video cards ROM) that enables native resolution throughout the entire boot process. With CSM disabled you should have no mode switches at all. The exception to this might be high refresh panels, but even then you should only have one switch from 60Hz to xxxHz. Edit: I know the old card didn't flicker but Nvidia or the board partners seem to regularly tweak the max boot resolution of the Video ROM/EFI driver. I had a reference NV built+sold 970 that wouldn't do 4K during boot on the HDMI port. Not only wouldn't it do 4K but it wouldn't display anything during POST/Windows load or even the UEFI settings! Nvidia's support refused to patch the vBIOS of that card, but lucky Maxwell didn't have locked-down vBIOS ROM's and I was able to fix it by replacing the EFI with one from a EVGA 970 (lol). Video below is with a Cold boot with a Z87 board (CSM disabled), 1080Ti and a 4K display. -- Booting doesn't flicker and only takes about 9 seconds; restarts take about 5-ish. I know it sucks to re-install Windows but it might be a solution.
post edited by Quad5Ny - 2017/06/04 03:08:39
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maniacvvv
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Re: Screen flickering during boot after install of a new GPU
2017/06/04 09:49:53
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Quad5Ny
If you disable CSM the firmware on the motherboard will load a EFI module during boot (dumped from the video cards ROM) that enables native resolution throughout the entire boot process.
With CSM disabled you should have no mode switches at all. The exception to this might be high refresh panels, but even then you should only have one switch from 60Hz to xxxHz.
Edit: I know the old card didn't flicker but Nvidia or the board partners seem to regularly tweak the max boot resolution of the Video ROM/EFI driver. I had a reference NV built+sold 970 that wouldn't do 4K during boot on the HDMI port. Not only wouldn't it do 4K but it wouldn't display anything during POST/Windows load or even the UEFI settings!
Nvidia's support refused to patch the vBIOS of that card, but lucky Maxwell didn't have locked-down vBIOS ROM's and I was able to fix it by replacing the EFI with one from a EVGA 970 (lol).
Video below is with a Cold boot with a Z87 board (CSM disabled), 1080Ti and a 4K display. -- Booting doesn't flicker and only takes about 9 seconds; restarts take about 5-ish. I know it sucks to re-install Windows but it might be a solution.
The above looks to be a TV at 60hz? on a HDMI port? It should be noted we are talking about -BIOS screens- not Windows loading Also, I run a 2008 x58 motherboard... there is no UEFI or CSM involved with what I am seeing The more I think about this, it certainly looks more and more like a issue with the monitor coming out of sleep (since its only during cold start) I will test with the monitor powered down and report back
post edited by maniacvvv - 2017/06/04 10:56:05
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maniacvvv
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Re: Screen flickering during boot after install of a new GPU
2017/06/04 10:18:29
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I can reproduce the flickering from (monitor) in sleep (not powersave) -and- cold start I was going to disconnect my second monitor and redo my desktop settings to correctly test, but I have decided its not worth it. This is really a non-issue as BIOS is shown and functions, and once Windows starts to load nothing is seen. This is all about a new card, high refresh monitors and some really minor booting kinks... --->since its not harmful and does not affect the use of Windows at all, its not worth the effort. If it bothers you, turn the BIOS boot screens off as shown in the vid  Flickering will occur on all monitors when resolution or refresh rates are changed, the duration and intensity will depend on how you/or your hardware is changing the setting. Its like shifting gears in a car, some shifts are barely noticed and others can dramatic.. but a shift is a shift.
post edited by maniacvvv - 2017/06/04 11:04:26
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Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/04 22:45:10
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Thanks guys, since it's not harmfull i'll live with it, my boot is less than 10 secs even with flickering so it's not that bad but i was mostly wondering if that cause harm to the screen or gpu But if i wanted to reinstall Windows, what steps should i follow to disable CSM and what will change besides that to my rig? thanks again
post edited by Asryan - 2017/06/04 23:03:28
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Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/07 08:36:17
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maniacvvv
I can reproduce the flickering from (monitor) in sleep (not powersave) -and- cold start
I was going to disconnect my second monitor and redo my desktop settings to correctly test, but I have decided its not worth it.
This is really a non-issue as BIOS is shown and functions, and once Windows starts to load nothing is seen.
This is all about a new card, high refresh monitors and some really minor booting kinks...
--->since its not harmful and does not affect the use of Windows at all, its not worth the effort. If it bothers you, turn the BIOS boot screens off as shown in the vid
Flickering will occur on all monitors when resolution or refresh rates are changed, the duration and intensity will depend on how you/or your hardware is changing the setting. Its like shifting gears in a car, some shifts are barely noticed and others can dramatic.. but a shift is a shift.
Yes I guess it's about frequency refreshing, just received a certified DP cable and same issue, well at least i have a certified one now, don't know if that's a consolation :D
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Sajin
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Re: Screen flickering during boot after install of a new GPU
2017/06/07 08:50:14
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This issue must be specific to 1080 ti as my pascal titan x's (non-xp's) don't show this issue.
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Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/07 08:53:05
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I guess it's the combo with my screen which is 100Hz on OC, maybe the OC of hertz is happening during boot. I should try to set it up 60hz to see
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Sajin
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Re: Screen flickering during boot after install of a new GPU
2017/06/07 08:55:48
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Asryan
I guess it's the combo with my screen which is 100Hz on OC, maybe the OC of hertz is happening during boot. I should try to set it up 60hz to see
Wouldn't hurt to try it. I'm using 144hz panel myself.
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Asryan
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Re: Screen flickering during boot after install of a new GPU
2017/06/07 09:02:49
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Well just tried but still doing it, no clue..
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AdamInk
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Re: Screen flickering during boot after install of a new GPU
2017/06/08 00:30:19
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I think its related to high refresh rate and gsync monitors. I have a monitor like that to, and before loadig the os it do some screen flashing for me to, because when the bios screen loads up it shows 60hrtz, and when the windows loading screen appears it changes to 144hrtz and flashes.
So i think you should just live with this, its normal.
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ecristobal10
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Re: Screen flickering during boot after install of a new GPU
2018/06/19 16:59:41
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Hi
I am also having this issue, I thought my new gpu was faulty but if this is normal and others are having this issue I can live with it too 😪 after all I have tried pretty much everything even reinstalled os in uefi bios mode!
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HeavyHemi
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Re: Screen flickering during boot after install of a new GPU
2018/06/19 17:07:46
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ecristobal10
Hi
I am also having this issue, I thought my new gpu was faulty but if this is normal and others are having this issue I can live with it too 😪 after all I have tried pretty much everything even reinstalled os in uefi bios mode!
It's 100% normal. Those who do not see it or do not have it are outliers. It is simply due to mode/resolution changes during boot.
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Hoggle
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Re: Screen flickering during boot after install of a new GPU
2018/06/19 18:09:27
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Mostly with DP I see issues regarding the cable itself and I would be shocked if the card has any risk of problem from it. That said if it is doing it in the bios I probably would consider a new certificatied cable or just use an HDMI cable I have playing around since I don’t need the bios daily.
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ThrashZone
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Re: Screen flickering during boot after install of a new GPU
2018/06/20 06:38:13
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Asryan
Hi EVGA,
I got a new 1080 ti FTW3 since few days and it runs great but i noticed that during the boot of my pc, my screen is flickering until I get on the desktop.
Any ideas ?
Thanks !
Hi, Happens with G-Sync monitors no telling why but does happen on my aoc 144Hz too very weird.
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