English Community

Gaming – Lenovo LegionY Gaming Accessories & Curved Gaming Monitors
All Forum Topics
Options

7 Posts

10-01-2019

FI

7 Signins

56 Page Views

  • Posts: 7
  • Registered: ‎10-01-2019
  • Location: FI
  • Views: 56
  • Message 1 of 53

Y27q-20 G-sync issues at 165Hz

2019-10-01, 9:03 AM

I just purchased a Lenovo Legion Y27q-20 monitor (model number 65EEGAC1EU) and it's a Freesync monitor. I'm aware that not all Freesync monitors work flawlessly with G-sync but the issues I'm having are quite severe and it would be awesome if the issues I'm having are something that can be fixed on Lenovos side (I have also contacted Nvidia regarding the same issue as I'm not sure if it's in the drivers or the monitor firmware).

 

The issues:

- The monitor runs natively at 165Hz and G-sync can be enabled with the out-of-the-box settings. But the main issue is black screens that appear when the application/game fps fluctuates significantly.

- One example is when you start Overwatch, the screen goes completely black for 2-3 seconds every time you navigate the game menu (Select "Options" in main menu of OW -> screen black for 2-3 seconds -> picture returns). When the screen is black audio is still working and the game is running normally in the background, just the picture is missing.

- Same issue occurs in Battlefield V. While in menus, screen turns black for 2-3 seconds. This happens every 10 seconds.

- Switching refresh rate to 144Hz solves the issue mostly, but the black screens still occur in some cases. One case would be when watching Netflix in Firefox on fullscreen. When I toggle out from fullscreen the image goes black for circa 2 seconds.

- I had none of these issues with my previous display (MSI MAG341CQ, Freesync display, running G-sync at 115Hz), running the same drivers (436.30).

 

System specs:

- Asus ROG B450-F motherboard

- Ryzen 5 2600

- Asus ROG Strix 1080Ti

- G-Skill Trident-Z 2 x 8GB

- Display connected via DisplayPort (1.4)

- Monitor firmware v1.0

Reply
Options

5 Posts

10-02-2019

US

4 Signins

28 Page Views

  • Posts: 5
  • Registered: ‎10-02-2019
  • Location: US
  • Views: 28
  • Message 2 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-10-03, 11:46 AM
Try making sure your windows resolution and refresh rates are the same to your games.
Turn off any in game HUDs (steam friends list ie.)
Reply
Options

6 Posts

10-03-2019

FI

17 Signins

122 Page Views

  • Posts: 6
  • Registered: ‎10-03-2019
  • Location: FI
  • Views: 122
  • Message 3 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-10-03, 14:01 PM

I can confirm this behaviour when running at 165Hz. As far as I can tell, it's LFC related. When the framerate goes <48 FPS it looks like the LFC tries to do something weird and the screen goes black. I'd imagine that this is likely a driver related problem (though, could be monitor firmware related too). Some say that selecting gaming related profile from OSD prevents that. I haven't tested that. I mainly use 144Hz and I haven't had any issues when using that refresh rate. There aren't that many 165 hz 1440p Adative Sync monitors so I wouldn't be surprised if driver support isn't flawless at the moment.

 

Also I can't reproduce that Netflix issue. Are you sure it's the same issue? In my case G-sync doesn't trigger when watching Netflix (in any browser or Windows 10 app) no matter what setting. I wouldn't even bother using Chrome or Firefox for Netflix since those are limited to 720p without hardware accleration. When using Edge (and the new Edge) or Windows 10 app Netflix will offer 1440p or 4K streams assuming that GPU supports HDCP 2.2.

Intel Core i7-3770K & Thermalright True Spirit | ASUS P8Z77-V | Corsair AX760 | Define R4 | 4x4GB G.SKILL RipjawsX 1600MHz | EVGA GeForce GTX 1070 GAMING ACX 3.0 | Lenovo Legion Y27q-20 | Creative Sound BlasterX AE-5 | Massdrop x Sennheiser HD 6XX | Samsung 830 128GB, Crucial MX500 2TB & Toshiba HDD 3TB | Windows 10 Pro x64
Reply
Options

7 Posts

10-01-2019

FI

7 Signins

56 Page Views

  • Posts: 7
  • Registered: ‎10-01-2019
  • Location: FI
  • Views: 56
  • Message 4 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-10-03, 14:11 PM
Thanks for your reply!

I'm actually the one who wrote on reddit about the game profile fix, but it caused other issues (color profile and gamma settings of the monitor going all wonky) so I had to abandon that idea.

LFC could well be the issue, as the problems usually occur when there are bigger fluctuations in FPS. Hopefully this is something that Nvidia can correct in future drivers. As for the messed up colors and gamma when using preset profiles on the monitor, that's most likely a firmware issue.
Reply
Options

6 Posts

10-03-2019

FI

17 Signins

122 Page Views

  • Posts: 6
  • Registered: ‎10-03-2019
  • Location: FI
  • Views: 122
  • Message 5 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-11-10, 8:56 AM

I think I managed to fix my issues. Latest NVIDIA drivers (after this was added to G-SYNC Compatible list) seem to recognise this a bit differently since CRU can read one extension block data now. I can now delete the extension block that contains 165Hz timings. It seems to cause issues at least with my GTX 1070.

 

I did some testing and this seems to fix the black screening/loosing signal when adatpive sync is enabled at 165 Hz. Here's the iImportable CRU settings file (create "settings.txt" or what even you want to name it and then copy paste stuff below - also in attachment). After importing the settings turn the display on and off or restart your system. I've tested these with DP1.4 mode so not sure if it will work when using DP1.2.

00 FF FF FF FF FF FF 00 30 AE EE 65 01 01 01 01
1A 1D 01 04 B5 3C 22 78 3B 44 55 A9 55 4D 9D 26
0F 50 54 21 08 00 81 80 95 00 A9 C0 B3 00 D1 C0
01 01 01 01 01 01 EB F5 00 A0 A0 A0 67 50 20 30
35 00 80 68 21 00 00 1A 14 EC 00 A0 A0 A0 67 50
20 30 35 00 80 68 21 00 00 1A 70 C2 00 A0 A0 A0
55 50 30 20 35 00 80 68 21 00 00 1A 00 00 00 FD
0C 30 A5 03 03 44 01 0A 20 20 20 20 20 20 02 51
02 03 37 70 4D 61 60 1F 90 14 01 03 04 12 13 05
02 3F 23 09 07 07 83 01 00 00 E2 00 D5 65 03 0C
00 10 00 68 1A 00 00 01 01 30 A5 00 E3 05 C0 00
E6 06 07 01 61 56 1C 56 5E 00 A0 A0 A0 29 50 30
20 35 00 80 68 21 00 00 1E A0 73 00 6A A0 A0 29
50 08 20 35 00 80 68 21 00 00 1A 70 A0 00 A0 A0
A0 46 50 30 20 35 00 80 68 21 00 00 1E 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 AE
70 12 17 00 00 03 00 14 B8 08 01 00 FF 09 9F 00
2F 80 1F 00 9F 05 45 00 02 80 04 00 1B 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90

There's definitely something unoptimal with the default 165Hz timings since.

Intel Core i7-3770K & Thermalright True Spirit | ASUS P8Z77-V | Corsair AX760 | Define R4 | 4x4GB G.SKILL RipjawsX 1600MHz | EVGA GeForce GTX 1070 GAMING ACX 3.0 | Lenovo Legion Y27q-20 | Creative Sound BlasterX AE-5 | Massdrop x Sennheiser HD 6XX | Samsung 830 128GB, Crucial MX500 2TB & Toshiba HDD 3TB | Windows 10 Pro x64
Reply
Options

7 Posts

10-01-2019

FI

7 Signins

56 Page Views

  • Posts: 7
  • Registered: ‎10-01-2019
  • Location: FI
  • Views: 56
  • Message 6 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-11-13, 17:30 PM

Thanks for the info! I installed the newest drivers and indeed CRU does show an extension block by default now. The extension block does however not show any 165Hz timings by default for me. I also tried importing your settings and this only adds timings for a 150Hz mode for me. I'm not sure if I'm doing something wrong, but just in case I reset all my CRU settings and tried again with the same results.

 

Another thing I meant to ask was if you running 8bit or 10bit color? I'm currently on 8bit, could this be affecting the CRU profiles?

Reply
Options

6 Posts

10-03-2019

FI

17 Signins

122 Page Views

  • Posts: 6
  • Registered: ‎10-03-2019
  • Location: FI
  • Views: 122
  • Message 7 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-11-14, 20:46 PM

Personally I use 10-bit but it doesn't make difference (works at 8-bit too).

 

It should look like this:

If any other extension block show up, try deleting them. Also you probably have to tick "Import complete EDID" when importing the settings.

 

By default it only shows the CEA-861 block for me. Then there was default extension block that it couldn't read (which apparently has the 165Hz timings). I deleted that and replaced it custom DisplayID block, used the 100Hz timings (since it fits with the 680Mhz clock limit) as a base from CEA-861 block and created 165Hz.

 

Previously it didn't show the CEA-861 block, just two default extension blocks but either latest NVIDIA driver made difference or it did that after I tried using this through HDMI (and reset DP so that it Windows would detect it again).

 

(Oh boy... One can't edit old posts.)

I added the timings as attachment to this post just in case, since those old ones are not 100% the same (it shouldn't difference though).

 

EDIT:

That being said, I got the issue in Star Wars Jedi Fallen Order all the time... So I now ended up taking that 165Hz resolution out completely and just use 150 Hz for now.

Intel Core i7-3770K & Thermalright True Spirit | ASUS P8Z77-V | Corsair AX760 | Define R4 | 4x4GB G.SKILL RipjawsX 1600MHz | EVGA GeForce GTX 1070 GAMING ACX 3.0 | Lenovo Legion Y27q-20 | Creative Sound BlasterX AE-5 | Massdrop x Sennheiser HD 6XX | Samsung 830 128GB, Crucial MX500 2TB & Toshiba HDD 3TB | Windows 10 Pro x64
Reply
Options

7 Posts

10-01-2019

FI

7 Signins

56 Page Views

  • Posts: 7
  • Registered: ‎10-01-2019
  • Location: FI
  • Views: 56
  • Message 8 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-11-28, 7:04 AM

Once again, thanks for your help, but as your latest edit says, the problem still persists, albeit the black screens are not popping up that often. For me this manifests at least when playing Overwatch. With custom timings black screens appear roughly 1-2 times per hour of playtime. I'm now using 150Hz since I have not seen any black screens with this refresh rate and the difference between 150 and 165 is hardly noticeable anyway since I'm not using the fastest pixel response time (way too much overshoot).

 

I guess I'm pretty much going to give up on trying to get 165Hz G-sync to work since I personally don't really even notice the difference and I'm already super happy with the monitor at 150Hz.

 

Even with this issue, I can warmly recommend the monitor to anyone considering it, if you are okay with giving up G-sync at 165Hz or opting for 150Hz instead.

Reply
Options

1 Posts

12-03-2019

US

3 Signins

23 Page Views

  • Posts: 1
  • Registered: ‎12-03-2019
  • Location: US
  • Views: 23
  • Message 9 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-12-03, 8:30 AM

Apart from running the latest Nvidia/AMD driver, have you tried downloading the monitor driver from https://support.lenovo.com/us/en/downloads/ds540411?

Please report back if it makes any difference.

Reply
Options

6 Posts

10-03-2019

FI

17 Signins

122 Page Views

  • Posts: 6
  • Registered: ‎10-03-2019
  • Location: FI
  • Views: 122
  • Message 10 of 53

Re: Y27q-20 G-sync issues at 165Hz

2019-12-03, 18:48 PM

It doesn't. This seem to be probably NVIDIA Pascal related issue. Some other users have the same behaviour one another 165Hz adaptive sync monitor. So far Navi and Turing users have not reported any issues as far as I know.

Intel Core i7-3770K & Thermalright True Spirit | ASUS P8Z77-V | Corsair AX760 | Define R4 | 4x4GB G.SKILL RipjawsX 1600MHz | EVGA GeForce GTX 1070 GAMING ACX 3.0 | Lenovo Legion Y27q-20 | Creative Sound BlasterX AE-5 | Massdrop x Sennheiser HD 6XX | Samsung 830 128GB, Crucial MX500 2TB & Toshiba HDD 3TB | Windows 10 Pro x64
Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save

X

Delete