The RX 6000 series Owners' Club

[BatRastard]

Hi,

Thanks for your response. I don't have dp on my monitor so am using hdmi. I do have a hdmi to dp adaptor but that is not in use. I've changed the input to HDMI 1 and turned off the auto source. Sadly the issue is persisting. I didn't have this with the RX580 and when l switch out to that GPU it goes away.

It is as if the RX 6600 only kicks in once the OS has reached the login screen.

I just uploaded a video of this very behavior and it explains why this is happening.

In short: Either AMD or their AIBs hardcoded the GOP driver embedded in the VBIOS to display a specific resolution and refresh rate at POST. If your display can support it, all is great! If not, you're getting "Input Not Supported" until Windows/Linux loads and the Adrenaline drivers kick in. For example, my MSI RX 6600 Mech 2 does this very thing to my poor 1080p Acer display (R241Y) at boot up of my MSI B550 A-Pro. Used to see a little underline cursor in the upper left corner with my GTX 1050 Ti. Not anymore. What I had to do is hook up my Vizio V505-G9 4KTV up to the HDMI and that got me into the BIOS so I could enable everything for Resizable BAR (which requires UEFI Mode), and that's when I noticed a small detail on the Info screen of my 4KTV: the HDMI output of this MSI RX 6600 is hardcoded to drive a 2160p signal at 30hz. Not 720p, not 1080p, not even basics like 800x600. Nope - 4K out of the gate! No way in hell my Acer is displaying that!

So the only solution (other than AMD or their AIBs releasing a new VBIOS) is to stay in CSM Mode, buy a 4K display with HDMI/DisplayPorts, or try to find an HDMI-to-HDMI (or DP-to-HDMI) converter to downscale the 2160p down to 1080p ...

That or hooking up the 4KTV every time I need to get into the BIOS ... (I'm not overclocking NOW! )

 

[GreiverBlade]

I just uploaded a video of this very behavior and it explains why this is happening.

In short: Either AMD or their AIBs hardcoded the GOP driver embedded in the VBIOS to display a specific resolution and refresh rate at POST. If your display can support it, all is great! If not, you're getting "Input Not Supported" until Windows/Linux loads and the Adrenaline drivers kick in. For example, my MSI RX 6600 Mech 2 does this very thing to my poor 1080p Acer display (R241Y) at boot up of my MSI B550 A-Pro. Used to see a little underline cursor in the upper left corner with my GTX 1050 Ti. Not anymore. What I had to do is hook up my Vizio V505-G9 4KTV up to the HDMI and that got me into the BIOS so I could enable everything for Resizable BAR (which requires UEFI Mode), and that's when I noticed a small detail on the Info screen of my 4KTV: the HDMI output of this MSI RX 6600 is hardcoded to drive a 2160p signal at 30hz. Not 720p, not 1080p, not even basics like 800x600. Nope - 4K out of the gate! No way in hell my Acer is displaying that!

So the only solution (other than AMD or their AIBs releasing a new VBIOS) is to stay in CSM Mode, buy a 4K display with HDMI/DisplayPorts, or try to find an HDMI-to-HDMI (or DP-to-HDMI) converter to downscale the 2160p down to 1080p ...

That or hooking up the 4KTV every time I need to get into the BIOS ... (I'm not overclocking NOW! )

i use a 2560x1440 screen @2880x1620 (technically)

that issue is only with HDMI? because if yes ... another solution is to use DP, my screen is connected via DP and i have zero issues of the sort ...
nevermind i reread, the one you answer to mention his screen has no DP input ... indeed the only solutions in that case are the one you mentions

 

[AusWolf]

That sounds like it's the case for this, but not in general - the RX 6800 reference runs pretty cool for a reference card. With the same (ish?) cooler and TDP. Seems to me that the RX 6750XT is just a hotter running die overall - it's definitely pushed quite far in terms of clocks and power for such a small die.

I think the 6800 XT runs cooler because it pushes about the same power through a larger die - that is, the 6750 XT's heat is more concentrated and harder to get rid of. It's nearly 6800 level of performance asked from a smaller die. It's a shame that there isn't much undervolting headroom in it (or in my unit at least).

I would definitely go for hotter and quieter, but then I'm generally very sensitive to noise. 100% fans on any GPU would be unbearable to me. But I also wouldn't worry about 105°C hotspot temps. AMD guarantees 110°C (and yes, that's long-term), and silicon can handle temperatures quite a bit above that before taking damage at sensible voltages and current levels. There's safety margin built into that 110°C number too after all. And, of course, the hotspot will most likely move around the die - it's not the same area hitting those temperatures all the time.

Thanks, that's reassuring. I think I'll go that route myself (I hate fan noise too). If AMD purposefully configured this card to run like this, then it must be safe and the problem is really just in my head.

It might be worth looking into repasting and increasing mounting pressure on the cooler though, as that's been a repeated complaint about some AMD reference designs - either using some sort of quasi-thermal pad instead of paste, having too low mounting pressure (due to the thickness of these pads/sheets), or both. Nylon washers behind the retention screws would do the trick.

Repasting isn't really an option on these as far as I know. I've watched GN's teardown of the 6700 XT - AMD uses some thin graphene sheet (or something like that) as TIM for the reference GPUs that theoretically works better than paste.

I also remember doing the washer trick on my ROG Strix 5700 XT back in the days. It slightly improved GPU temps, but made the VRAM hotter as the fans could spin slower and the VRAM didn't get so much airflow. I remember seeing above 100 °C on the VRAM hotspot temps which is quite near the safe limit of GDDR6 (yes, the ROG Strix 5700 XT was a bad construction). At least I haven't seen the VRAM on the 6750 XT exceed 90 °C, yet (touch wood).

 

[Valantar]

I just uploaded a video of this very behavior and it explains why this is happening.

In short: Either AMD or their AIBs hardcoded the GOP driver embedded in the VBIOS to display a specific resolution and refresh rate at POST. If your display can support it, all is great! If not, you're getting "Input Not Supported" until Windows/Linux loads and the Adrenaline drivers kick in. For example, my MSI RX 6600 Mech 2 does this very thing to my poor 1080p Acer display (R241Y) at boot up of my MSI B550 A-Pro. Used to see a little underline cursor in the upper left corner with my GTX 1050 Ti. Not anymore. What I had to do is hook up my Vizio V505-G9 4KTV up to the HDMI and that got me into the BIOS so I could enable everything for Resizable BAR (which requires UEFI Mode), and that's when I noticed a small detail on the Info screen of my 4KTV: the HDMI output of this MSI RX 6600 is hardcoded to drive a 2160p signal at 30hz. Not 720p, not 1080p, not even basics like 800x600. Nope - 4K out of the gate! No way in hell my Acer is displaying that!

So the only solution (other than AMD or their AIBs releasing a new VBIOS) is to stay in CSM Mode, buy a 4K display with HDMI/DisplayPorts, or try to find an HDMI-to-HDMI (or DP-to-HDMI) converter to downscale the 2160p down to 1080p ...

That or hooking up the 4KTV every time I need to get into the BIOS ... (I'm not overclocking NOW! )

Wow, that's weird. I've used my PowerColor RX 6600 Fighter plenty on a 1200p monitor (an old Dell, through a DP to DVI adapter), but don't think I've tried it on HDMI yet. It's about to move in next to a 1080p TV though, so I can report back after seeing how it responds to booting up to 1080p over HDMI.

 

[Lost_Troll]

I just uploaded a video of this very behavior and it explains why this is happening.

In short: Either AMD or their AIBs hardcoded the GOP driver embedded in the VBIOS to display a specific resolution and refresh rate at POST. If your display can support it, all is great! If not, you're getting "Input Not Supported" until Windows/Linux loads and the Adrenaline drivers kick in. For example, my MSI RX 6600 Mech 2 does this very thing to my poor 1080p Acer display (R241Y) at boot up of my MSI B550 A-Pro. Used to see a little underline cursor in the upper left corner with my GTX 1050 Ti. Not anymore. What I had to do is hook up my Vizio V505-G9 4KTV up to the HDMI and that got me into the BIOS so I could enable everything for Resizable BAR (which requires UEFI Mode), and that's when I noticed a small detail on the Info screen of my 4KTV: the HDMI output of this MSI RX 6600 is hardcoded to drive a 2160p signal at 30hz. Not 720p, not 1080p, not even basics like 800x600. Nope - 4K out of the gate! No way in hell my Acer is displaying that!

So the only solution (other than AMD or their AIBs releasing a new VBIOS) is to stay in CSM Mode, buy a 4K display with HDMI/DisplayPorts, or try to find an HDMI-to-HDMI (or DP-to-HDMI) converter to downscale the 2160p down to 1080p ...

That or hooking up the 4KTV every time I need to get into the BIOS ... (I'm not overclocking NOW! )

Read this thread: Help! - New Radeon RX 6600 XT problem (PC not booting, freeze before bios) | TechPowerUp Forums

I think your issue is with the UEFI BIOS having a bad setting. It could also be the Acer display has a bad EDID prom or is not written properly to meet the EIA/CEA (CTA) standard.

Extended Display Identification Data - Wikipedia

On a side note, I used a HP V21 1080 disply to setup my new build with a RX 6650 XT without issue.

 

[PerfectWave]

I just uploaded a video of this very behavior and it explains why this is happening.

In short: Either AMD or their AIBs hardcoded the GOP driver embedded in the VBIOS to display a specific resolution and refresh rate at POST. If your display can support it, all is great! If not, you're getting "Input Not Supported" until Windows/Linux loads and the Adrenaline drivers kick in. For example, my MSI RX 6600 Mech 2 does this very thing to my poor 1080p Acer display (R241Y) at boot up of my MSI B550 A-Pro. Used to see a little underline cursor in the upper left corner with my GTX 1050 Ti. Not anymore. What I had to do is hook up my Vizio V505-G9 4KTV up to the HDMI and that got me into the BIOS so I could enable everything for Resizable BAR (which requires UEFI Mode), and that's when I noticed a small detail on the Info screen of my 4KTV: the HDMI output of this MSI RX 6600 is hardcoded to drive a 2160p signal at 30hz. Not 720p, not 1080p, not even basics like 800x600. Nope - 4K out of the gate! No way in hell my Acer is displaying that!

So the only solution (other than AMD or their AIBs releasing a new VBIOS) is to stay in CSM Mode, buy a 4K display with HDMI/DisplayPorts, or try to find an HDMI-to-HDMI (or DP-to-HDMI) converter to downscale the 2160p down to 1080p ...

That or hooking up the 4KTV every time I need to get into the BIOS ... (I'm not overclocking NOW! )

you can enter bios from windows from the recovery window. try it and see if it appear on your monitor

 

[BatRastard]

Read this thread: Help! - New Radeon RX 6600 XT problem (PC not booting, freeze before bios) | TechPowerUp Forums

I think your issue is with the UEFI BIOS having a bad setting. It could also be the Acer display has a bad EDID prom or is not written properly to meet the EIA/CEA (CTA) standard.

Extended Display Identification Data - Wikipedia

On a side note, I used a HP V21 1080 disply to setup my new build with a RX 6650 XT without issue.

The OP in that thread neglected to mention one crucial detail: was he in UEFI Mode or Legacy CSM? I believe his rig was in UEFI Mode before he cleared CMOS which put him back in Legacy CSM Mode, and he errantly believed his problem was solved. We're left to speculate if his issue returned upon re-enabling UEFI Mode ...

The behavior of a GPU at POST is determined by the embedded GOP Driver in the GPU and UEFI/CSM Mode. The GOP Driver can be written to initialize 480p over HDMI in CSM and then 1080p or 2160p over DP in UEFI Mode. It's all up to the AIBs - they modify AMD's firmware to their standards, which is why some of you with the same GPU from another vendor have different experiences. There's is a new menu that appeared in the B550 A-Pro BIOS after installing the RX 6600 called "AMD Driver Health". I clicked it and its empty. I'm going to clear CMOS just in case the UEFI VBIOS of the GTX 1050 left a resolution table for the motherboard UEFI to use and it's preventing the RX 6600 from leaving its own. A CMOS clear and reconfiguration couldn't hurt at this point.

you can enter bios from windows from the recovery window. try it and see if it appear on your monitor

It didn't.

Okay, it's getting really really weird now ...

The CMOS clear didn't help and neither did CSM Mode. In fact, tonight's evidence suggests an inexplicable incompatibility between the Acer display and this RX 6600. And I mean inexplicable ....

First some screenshots ...




From these screenshots, you can pretty much glean the native resolution of the Acer display is 1080p at 75Hz and that's what its using within Windows on both the RX 6600 and the GTX 1050 Ti. So on a whim, I rebooted and blind launched into my BIOS. From there, I unplugged the Acer and plugged the 4KTV back in, and then pulled up the detailed info on the Vizio TV with its own remote ... and it, too, was displaying my BIOS at 1080p at 75Hz instead of at 2160p at 30Hz.

At this point, I did the CMOS clear the easy way by pressing F6 --> Enter --> F10 --> Enter ...

Once the system rebooted and I got back into BIOS, I hooked the Acer back up and ALT+CTRL+DEL to reboot .................................. and "Input Not Supported" ...

Let me restate that again: the RX 6600 is properly detecting and trying to feed this Acer display its own native resolution and refresh rate ... and it only accepts it in Windows!

This ridiculous behavior NEVER happened on the GTX 1050 Ti OC ...

None of this makes any sense ... I'm at a total loss here!

 

[Valantar]

Wow, that is some baffling stuff. Can you somehow lock the display to 60Hz through its OSD?

 

[Lost_Troll]

You may want to see if there is an updated version of your cards VBIOS, VBIOS Information | MSI Global English Forum - Index

"If you are running stock VBIOS that came with your card, your best bet for update check is by running LiveUpdate / MSI Dragon Center as that will scan the card and provide an update if one is available."

You may also want to open a support ticket with MSI and see what they say.

 

[BatRastard]

The OSD is only has a few options related to display such as overdrive and disabling Freesync and some are greyed out. Also, Dragon Center is seriously deprecated and was replaced with MSI Center. It causes more problems than it's worth but I did reinstall it just to see if there was a video BIOS update. No such luck ...

UPDATE: Got a spare HP w2006 (sitting on top my Linux box in the video). Hooked a DVI-to-HDMI converter to it and the RX 6600 said, "How you doin?!?"
Hooked the Acer back up, and it displayed my BIOS screen at the HP's native resolution (1680x1050) until I rebooted. Back to "Input Not Supported". Makes me sick ...

 

[BatRastard]

After MSI Support more or less told me to get bent, I broke down and replaced the Acer with ....... an LG UltraGear 32" 1440p Gaming monitor for $212 out the door ...

 

[GreiverBlade]

After MSI Support more or less told me to get bent, I broke down and replaced the Acer with ....... an LG UltraGear 32" 1440p Gaming monitor for $212 out the door ...

damn that LG ultragear 32" is 252chf for me that's a whole 47chf cheaper than my budget Medion Erazer 32" 1440p IPS (budget that is not a TN or VA ... is an achievement by itself ... )

does it support higher resolution than 1440p (mine does 2880x1620p aka 3k )

 

[BatRastard]

damn tha LG ultragear 32" is 252chf for me that's a whole 47chf cheaper than my budget Medion Erazer 32" 1440p IPS

does it support higher resolution than 1440p (mine does 2880x1620p aka 3k )

Nope just 1440p ... and HDR is pathetic compared to my Vizio. Other than that, not bad. Haven't gamed on it yet. I'm due for a fresh Windows 11 install, actually.

 

[GreiverBlade]

Nope just 1440p ... and HDR is pathetic compared to my Vizio. Other than that, not bad. Haven't gamed on it yet. I'm due for a fresh Windows 11 install, actually.

i am surprised by my monitor i have since quite some years now ... still the perfect 1440p60/75 monitor i could find for 300chf~ (normal listing 399, i got a "last piece in stock" discount)
paired with the 6700 XT i have it's just perfect ...

just slightly bummed that 75hz is only 1440p, but 1620p60 is more than enough given what i play (plus i can't see improvement/advantages above 100hz, tested )

 

[BatRastard]

The refresh rate on this is killer -- 60Hz, 120hz, 144hz, and 165hz. I did a little gaming the other day on the Acer. Got damned good performance out of Control, Immortals Fenyx Rising, and Doom. But I'm concerned about the amount of heat in my FD Focus G with only 2 front intake fans and 1 exhaust fan out the back. Ran TimeSpy yesterday and my 3600 hit 93c ... only hits 71c on Cinebench ...

 

[Valantar]

damn that LG ultragear 32" is 252chf for me that's a whole 47chf cheaper than my budget Medion Erazer 32" 1440p IPS (budget that is not a TN or VA ... is an achievement by itself ... )

does it support higher resolution than 1440p (mine does 2880x1620p aka 3k )

What is the native resolution of that panel? I've never heard of a 2880x1620 desktop monitor - so unless it's downscaling a higher input resolution to 1440p, that would be a rather unique product.

Nope just 1440p ... and HDR is pathetic compared to my Vizio. Other than that, not bad. Haven't gamed on it yet. I'm due for a fresh Windows 11 install, actually.

Speaking of good HDR, I just bought an AOC Agon Pro AG274QXM - not entirely sure that I'll keep it yet, but man, that MiniLED backlight makes HDR a joy, and 1440p170 is nothing to scoff at either. Finally my 6900 XT has room to stretch its legs some

 

[GreiverBlade]

What is the native resolution of that panel? I've never heard of a 2880x1620 desktop monitor - so unless it's downscaling a higher input resolution to 1440p, that would be a rather unique product.

native is 1440p according to monitor specs (although i suspect it's a 1620p native downscaled )
as per manual : max 1440p


i mentioned the over resolution once here :

https://www.techpowerup.com/forums/threads/general-nonsense.232862/post-4604868

https://www.techpowerup.com/forums/threads/general-nonsense.232862/post-4604879

when 2.5k is too little and 4k is too much, 3k FTW

 

[Valantar]

native is 1440p according to monitor specs (although i suspect it's a 1620p native downscaled )
as per manual : max 1440p
View attachment 269695

i mentioned the over resolution once here :

https://www.techpowerup.com/forums/threads/general-nonsense.232862/post-4604868

https://www.techpowerup.com/forums/threads/general-nonsense.232862/post-4604879

when 2.5k is too little and 4k is too much, 3k FTW

If it's native 1440p I'm surprised that downscaled 1620p isn't annoyingly blurry tbh. That's a weird scaling factor, and while Cleartype might be able to handle text rendering well, other sharp edges must look soft still?

 

[GreiverBlade]

If it's native 1440p I'm surprised that downscaled 1620p isn't annoyingly blurry tbh. That's a weird scaling factor, and while Cleartype might be able to handle text rendering well, other sharp edges must look soft still?

it look fine at 1440p and crispier at 1620p, not sure of what to make about that screen, except that, it's the best screen i ever owned

 

[Valantar]

it look fine at 1440p and crispier at 1620p, not sure of what to make about that screen, except that, it's the best screen i ever owned

That's very weird - supersampling can make things look a bit sharper, but typically doesn't work well for static images, text or desktop apps. I guess it has a good scaler then!

 

[GreiverBlade]

That's very weird - supersampling can make things look a bit sharper, but typically doesn't work well for static images, text or desktop apps. I guess it has a good scaler then!

i guess so,

well i was surprised by that 299chf IPS 32" heck of a monitor (mostly made out of metal a bit of plastic anything but cheap looking, cast aluminum stand)
the GTX 1070 was barely enough for it at 1440p but the RX 6700 XT is just perfect (and still hold quite fine at 1620p)

 

[BatRastard]

I take back what I said about HDR on this LG. When you first enable it, it doesn't pop like you normally expect HDR to stand out. The presets that come with the display doesn't do HDR justice so I had to do a little bit of tweaking and I managed to get it looking as close as possible to my Vizio V505-G9 (which needed very little calibration).

Also had to uninstall LG's Windows-based OSD software -- craptacular junk crashed and froze constantly ...

 

[Valantar]

Nope just 1440p ... and HDR is pathetic compared to my Vizio. Other than that, not bad. Haven't gamed on it yet. I'm due for a fresh Windows 11 install, actually.

Honestly, getting HDR support at all on a $200 monitor is good - and getting actually functional HDR that makes a perceptible difference is very unusual. Monitors are overall crap when it comes to HDR support, while TVs are often very very good. It's a damn shame, really. Hardware Unboxed has an excellent monitor test suite where they test for actual HDR (as in more than "can decode a HDR signal", but whether it can actually display real high dynamic range imagery, has the contrast, color gamut and brightness to support it, and can control its backlight competently to ensure good image quality) - and the vast majority of "HDR" monitors fail miserably. Extremely few monitors have any kind of local dimming, and most that have have either 8 or 16 edge-lit "zones" - making it essentially useless. And most of those also only qualify for HDR400, which really isn't sufficiently bright for real HDR unless you're in a very dark room and the monitor has very good black levels.

It's good to hear that you could get some perceptible improvement through some tuning, but I'd honestly be shocked if it came anywhere near your Vizio TV. I just bought the cheapest "real" HDR monitor I could get my hands on, an AOC AG274QXM, and that definitely wasn't cheap - but it does HDR1000 and has a 576-zone MiniLED backlight, so its HDR is pretty good at least. It's still not as good as a 2020 Samsung Q80 TV though.

 

[BatRastard]

What makes this this display ... weird ... is that it's HDR10 but only 350 nits and its a VA instead of an IPS. It usually retails for $260 to $340 and I got it for $200 + $12 (Michigan 6 cent sales tax). I only paid $300 for my 50" Vizio two or three years ago (which is 600 nits if I recall) and it still retails for that price. But I only tried to game on it with my GTX 1050 at 1080p and it was a mess. Games like Gauntlet: Slayer Edition hard locked the computer (but work fine the LG) and Shadowman Remastered refused to use the soundbar and used my 4.1 computer speakers instead. Between the sound, resolution, refresh issues, the GTX 1050 just wouldn't cut it and the last game it did 1080p very well on was Yakuza 0 ...

 

[Valantar]

What makes this this display ... weird ... is that it's HDR10 but only 350 nits and its a VA instead of an IPS. It usually retails for $260 to $340 and I got it for $200 + $12 (Michigan 6 cent sales tax). I only paid $300 for my 50" Vizio two or three years ago (which is 600 nits if I recall) and it still retails for that price. But I only tried to game on it with my GTX 1050 at 1080p and it was a mess. Games like Gauntlet: Slayer Edition hard locked the computer (but work fine the LG) and Shadowman Remastered refused to use the soundbar and used my 4.1 computer speakers instead. Between the sound, resolution, refresh issues, the GTX 1050 just wouldn't cut it and the last game it did 1080p very well on was Yakuza 0 ...

That sounds rather weird, yeah, but some TVs just don't cooperate with PC GPUs for all kinds of reasons. Thankfully this seems to be improving as TV gaming with PCs is becoming more common (especially through the pandemic). Does it by any chance have a HDMI input labeled DVI or PC? If so, I'd use that and only that for connecting a PC, as that typically means both better communication and less lag-inducing and image-destroying post-processing applied. But yeah, you also easily get much higher brightness on TVs than monitors, as TVs are more commonly used in sunny areas where that brightness is needed. And the larger size makes it easy to stick a much more powerful backlight in there.

As for that monitor, I'd say it's good that it's a VA, as that way even with no local dimming the native contrast gets you much closer to baseline HDR requirements - specifically, 14 stops of brightness (1 'stop' = a doubling of light). 1000:1 contrast is ~11 stops (1024:1 would hit that exactly), so 4000:1 is 13 stops, landing most VA panels at a native dynamic range of 12-13 stops - which is far superior to the 11 stops of a non-locally dimmed IPS. It's still not actually HDR, but it can get a lot closer. Still, with that 350 nit peak brightness you'd need a pretty dark room to really get the most out of that, as ambient light will inevitably wash out very dark blacks and/or overpower the highlights otherwise.