Monday, June 27th 2016

GeForce GTX "Pascal" Faces High DVI Pixel Clock Booting Problems

The second design flaw to hit the GeForce GTX 1080 and GTX 1070 after the fan revving bug, isn't confined to the reference "Founders Edition" cards, but affects all GTX 1080 and GTX 1070 cards. Users of monitors with dual-link DVI connectors are noticing problems in booting to Windows with pixel clocks set higher than 330 MHz. You can boot to windows at default pixel clocks, and when booted, set the refresh-rates (and conversely pixel clocks) higher than 330 MHz, and the display works fine, it's just that you can't boot with those settings, and will have to revert to default settings each time you shut down or restart your machine.

A user of a custom-design GTX 1070 notes that if the refresh rate of their 1440p monitor is set higher than 81 Hz (the highest refresh rate you can achieve with pixel clock staying under 330 MHz) and the resolution at 2560 x 1440, the machine doesn't correctly boot into Windows. The splash screen is replaced with flash color screens, and nothing beyond. The system BIOS screen appears correctly (because it runs at low resolutions). The problem is also said to be observed on a custom-design GTX 1080, and has been replicated by other users on the GeForce Forums.

Source: Reddit
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147 Comments on GeForce GTX "Pascal" Faces High DVI Pixel Clock Booting Problems

#1
avatar_raq
It will affect a small number of users (those with high refresh rate no DP ports monitors) but it is an issue nevertheless. I wonder if a VGA bios update will solve this.
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#2
TheGuruStud
How was this not found by nvidia in super early testing, let alone reviewers? Rush, rush, rush, who cares, launch them all no matter the incompetence. I imagine the delay for users to find this was b/c almost no one can get the cards anyway XD
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#3
RejZoR
My system often hangs at boot (just black screen with white underscore in the top left middle of the screen) even with GTX 980. Something it never ever happened with HD7950 that I had before it. If I unplug the DisplayPort cable during boot and try again, it'll boot no problem. Huh? Related in any way?
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#4
the54thvoid
Monitors using dual link dvi with refresh rates above 81hz. I'm sure this will have some slobbering over Nvidia failing again but really...

Is Display Port or HDMI not better? And if your monitor doesn't have those, why buy an expensive gfx card. My 6 year old Dell has Display Port.
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#5
TheGuruStud
RejZoR said:
My system often hangs at boot (just black screen with white underscore in the top left middle of the screen) even with GTX 980. Something it never ever happened with HD7950 that I had before it. If I unplug the DisplayPort cable during boot and try again, it'll boot no problem. Huh? Related in any way?
Hell, monitor won't even show bios screen most of the time on a 660ti and it's not b/c of uefi (turned that stupid boot shit off, plus takes a while to detect devices).
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#6
TheGuruStud
the54thvoid said:
Monitors using dual link dvi with refresh rates above 81hz. I'm sure this will have some slobbering over Nvidia failing again but really...

Is Display Port or HDMI not better? And if your monitor doesn't have those, why buy an expensive gfx card. My 6 year old Dell has Display Port.
All of the low latency korean monitors came with only dvi (multiple inputs increase latency). Tons of them were sold for refresh OCing.

I have no monitors with DP. DP is a new addition to most monitors.
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#7
Eroticus
TheGuruStud said:
All of the low latency korean monitors came with only dvi (multiple inputs increase latency). Tons of them were sold refresh OCing.

I have no monitors with DP. DP is a new addition to most monitors.
DVI is available only on low-mid end monitors.

Most high-end monitor has DP/HDMI and maybe Thunder Bolt.
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#8
P4-630
The Way It's Meant to be Played
I'm using DVI-D and HDMI, both monitor and tv are running at 60Hz, so no problems for me.
If I was running a higher refresh-rate monitor, I would just lower the Hz before shutting down, because I would be uncomfortable flashing my expensive brand new card if there would be a BIOS update soon.
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#9
Vayra86
RejZoR said:
My system often hangs at boot (just black screen with white underscore in the top left middle of the screen) even with GTX 980. Something it never ever happened with HD7950 that I had before it. If I unplug the DisplayPort cable during boot and try again, it'll boot no problem. Huh? Related in any way?
I am running my 120hz panel over Display Port but I am also noticing that my boot up time is MUCH longer than it ever was before. The past weeks I've attributed this just to Windows 10 updates (which it may very well still be, shady as that OS does its business in background), but with the 'flicker bug' being fixed in the past Hotfix 386.51 driver I am getting really, really suspicious.

Fuck I'm rolling back to a solid Kepler-finished driver again and see what happens. Will post back results. Anyone got a solid version they run their Kepler cards with? Considering branch 350-something.

*note: Nvidia isn't scoring points over here the past year. Fuckup after fuckup, as little as they may be, but it's becoming a real pattern now.
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#10
Recon-UK
I run overclocked 75hz through HDMI, no matter the GPU i can't OC any higher than 65hz on DVI-D
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#11
ZoneDymo
Eroticus said:
DVI is available only on low-mid end monitors.

Most high-end monitor has DP/HDMI and maybe Thunder Bolt.
Bit simple to state it like that...
Its a choice in connection and HDMI is exactly the same except it carry's audio as well which nobody cares about in a monitor.
To call something low-mid end based on the connections it offers rather then the actual performance....well is just weird man.

On topic, get your shit together Nvidia!
Im sure another driver will fix it but man....
Posted on Reply
#12
Legacy-ZA
RejZoR said:
My system often hangs at boot (just black screen with white underscore in the top left middle of the screen) even with GTX 980. Something it never ever happened with HD7950 that I had before it. If I unplug the DisplayPort cable during boot and try again, it'll boot no problem. Huh? Related in any way?
I don't turn off my machine often, but I had this issue with my GTX760 before it died, I now use my old GTX580 and had/have this issue while using my display port on both cards. I am now on a DVI cable, ironically... but I still get the issue from time to time. Coincidence? I don't believe in them. The system in fact, doesn't hang, I can log in and everything, I just can't see anything. I don't really know what to think at this stage.
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#13
P4-630
The Way It's Meant to be Played
Anyway, good to know for when I upgrade to a 1440p monitor, preferably DP then.
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#14
Vayra86
P4-630 said:
Anyway, good to know for when I upgrade to a 1440p monitor, preferably DP then.
Yeah or HDMI 2.0

DP is not without its issues. Bit slow to connect.
Posted on Reply
#15
Eroticus
ZoneDymo said:
Bit simple to state it like that...
Its a choice in connection and HDMI is exactly the same except it carry's audio as well which nobody cares about in a monitor.
To call something low-mid end based on the connections it offers rather then the actual performance....well is just weird man.

On topic, get your shit together Nvidia!
Im sure another driver will fix it but man....
as I know DVI doesn't support 2440x1440@120/144 and over 2,560 × 1,600@60, based on this year, this isn't high-end any more...

Last 2 monitors i owned, didn't had DVI port. last 4 i owned didn't had VGA.
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#16
Vayra86
Eroticus said:
as I know DVI doesn't support 2440x1440@120/144 and over 2,560 × 1,600@60, based on this year, this isn't even close to high end.
Seeing as the 1070 cannot even max out 120 fps on a 1080p monitor in all games, I don't see why DVI-D can't be a high end connection. There is no single-GPU in the world that can saturate that connection with all the content you can play on it.

So what the fuck are you on about? 4K or 1440p says nothing at all about what 'end' you're on it just means you have a crapload of pixels to push.
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#17
P4-630
The Way It's Meant to be Played
Vayra86 said:
Yeah or HDMI 2.0

DP is not without its issues. Bit slow to connect.
I'm already using the HDMI port for my tv.
So I have to go with DP if I upgrade to 1440p if it would have a higher refresh rate than 60Hz.
Posted on Reply
#18
Ubersonic
the54thvoid said:
Is Display Port or HDMI not better?
Displayport is, it's the successor to DVI & HDMI. HDMI however is no better than DVI, they are sister technologies that emerged in the late 1990's, DVI was designed for monitors as a digital replacement for VGA, and HDMI was a stripped down version for designed for televisions as a digital replacement for SCART and component RGB, you see a lot of overlap however as their digital part is essentially the same, hence the existence of passive adaptors.
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#19
Eroticus
Vayra86 said:
Seeing as the 1070 cannot even max out 120 fps on a 1080p monitor in all games, I don't see why DVI-D can't be a high end connection. There is no single-GPU in the world that can saturate that connection with all the content you can play on it.

So what the fuck are you on about? 4K or 1440p says nothing at all about what 'end' you're on it just means you have a crapload of pixels to push.
Most shooters work very well, even with 290x. not every one like you play with MSAAx8
Posted on Reply
#20
Valdas
I wonder if bios fix will help. I own two monitors, one running at 144Hz and an older one running at 120Hz which requires DVI, so this is something that can potentially affect me when I finally get my hands on either 1080 or 1070.
Posted on Reply
#21
Recon-UK
Eroticus said:
Most shooters work very well, even with 290x. not every one like you play with MSAAx8
Agreed
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#22
Ubersonic
Recon-UK said:
I run overclocked 75hz through HDMI, no matter the GPU i can't OC any higher than 65hz on DVI-D
That's because you are using an old "single link" DVI cable, they are limited to 1920x1200@60Hz, you're getting the extra 5Hz due to running at 1080.
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#23
P4-630
The Way It's Meant to be Played
Valdas said:
I wonder if bios fix will help. I own two monitors, one running at 144Hz and an older one running at 120Hz which requires DVI, so this is something that can potentially affect me when I finally get my hands on either 1080 or 1070.
Or just lower the Hz everytime before shutting down, which what I would do, I'm uncomfortable flashing my expensive card.
Posted on Reply
#24
ZoneDymo
P4-630 said:
Or just lower the Hz everytime before shutting down, which what I would do, I'm uncomfortable flashing my expensive card.
That would be sooooo tedious though.
And for such an expensive card....I mean its your choice but I would keep the receipt.
Posted on Reply
#25
Vayra86
Eroticus said:
Most shooters work very well, even with 290x. not every one like you play with MSAAx8
Of course it can work, but you got the point I reckon - nothing wrong with DVI-D if it suits your monitor and rig, and there is no relation to it being 'low or high end'. It's like tires on a car, if they're the right size, it's fine, but you *can* get super exotic tires too and still be stuck to the same engine under the hood. You only get a faster car with a better engine.
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