A750显卡使用dp线使我的显示器只有60hz

[Haozhuang]

A750显卡使用dp线使我的显示器只有60hz 

 

[RandyT_Intel]

Hi Haozhuang,

请注意，我只能用英语为您提供支持。我使用了网络翻译工具来翻译此回复，因此，可能会有一些不准确的翻译. To further assist you, could you please answer the following questions? Your responses will help me isolate the issue and provide you with steps and recommendations to address it.

1. What is the model and make of your monitor?
2. Have you verified that your monitor supports a refresh rate higher than 60Hz?
3. Are you using the original DisplayPort cable that came with the monitor or a third-party cable?
4. Have you tried using a different DisplayPort cable to see if the issue persists?
5. Is the graphics card driver updated to the latest version?
6. Have you checked the display settings in your operating system to ensure the refresh rate is set to the maximum supported by your monitor?
7. Are there any other devices connected to the monitor, such as adapters or splitters?
8. Have you tried connecting the monitor to a different port on the graphics card?
9. Does the issue occur with other monitors or just this specific one?
10. Have you tested the monitor with another computer to see if it achieves a higher refresh rate?

You may also run SSU report so I can have an overview of the system information. Looking forward to your response.

Best,

Randy T.

Intel Customer Support Technician

[Haozhuang]

你好

我将一个一个回答你的问题

1.我显示器的型号和品牌我并不清楚，因为它是一台可以组装的显示器。

2.已验证，请看下边图片。

3.使用的是第三方DisplayPort电缆。

4.已尝试使用其他DisplayPort电缆。

5.我已经尝试最新驱动，但是问题依旧，并且尝试了6559、6299、5971、5590等驱动，但是问题依旧。

6.已经检查系统设置，最大刷新率依旧为60hz。

7.无。

8.已尝试，无用。

9.我使用另一台HDMI显示器可以使用最大刷新率。

10.已使用另一台显示器测试，它是正常的，可以最高240hz，请看下图。

另外我浏览了我们的社区发现了至少三个和我相同的问题，但是都没有解决方法，希望可以给我们提供解决方案或者在之后的图形驱动更新中解决该问题

[RandyT_Intel]

Hi Haozhuang,

The selectable resolutions or video modes (resolution + refresh rate) on your computer depend on both the computer configuration and the resolutions supported by the monitor or display. That's why I previously ask for the make and model of the monitor so I can check it on my end. You may visit this article for more information Unable to Select the Native Resolution and Other Supported Refresh... and try steps outlined in this guide.

Let me know if you need more information. I'm here to help.

Randy T.

Intel Customer Support Technician

[Haozhuang]

你好，我发现我没有240hz刷新率是因为带宽不足以支持我的显示器，但是当带宽不足的时候显卡应该启用Display Stream Compression，也就是dsc，但是显卡并没有自动启动dsc，导致带宽不够，240hz不显示，我使用电脑店里的RTX3060就会自动启用dsc，就可以使用240hz，下边的图片是我用工具测算我的屏幕开启240hz所需要的带宽，显示器支持DP1.4，希望您可以反馈给图形工程师，让他们尽快解决该问题。

这是我使用RTX3060所读取的我屏幕的EDID文件

00 FF FF FF FF FF FF 00 51 B8 03 16 00 00 00 00 0F 20 01 04 B5 23 16 78 07 0F 91 AE 52 43 B0 26
0F 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 85 70 00 A0 A0 40 A5 60 30 20
36 00 59 D7 10 00 00 1A 00 00 00 FD 0C 3C F0 A8 A8 73 01 0A 20 20 20 20 20 20 00 00 00 FC 00 54
4C 31 36 30 41 44 4D 50 30 33 2D 30 00 00 00 10 0C 30 F0 50 50 43 00 0A 20 20 20 20 20 20 01 AB
70 20 79 02 00 22 00 14 BF 94 11 85 FF 09 9F 00 2F 00 1F 00 3F 06 A4 00 02 00 05 00 2B 00 06 27
00 3C EF 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 DE 90

 

 

[Jeremy_Wu]

你用RTX3060@240Hz的时候，位深度是6位还是8位或10位？如果是6位的话，也没有开启DSC，你可以把3060@240Hz的edid在CRU里多添加几个档位的刷新率配置，比如165 175 185 200 240，然后保存在Win里开关机切换刷新率几次可能就有6bit 240hz了

[Haozhuang]

兄弟，非常感谢你提供的建议，我使用RTX3060的时候是8bit，也就是说是开启dsc的。然后我参考你的建议使用cru最高可以开启210hz了，然后我稍微改了一点参数，现在可以220hz了，但是英特尔的dsc依旧有问题，无法开启，不过目前我依旧满足了，非常感谢你的建议

[Jeremy_Wu]

我猜你这是16寸组装便携屏吧？用的是edp-dp直通板吧？

你先确定你这天马TL160ADMP03面板高刷是多少Hz，然后用CRU在EDID扩展Blocks里DisplayID数据块Detailed resolutions中添加一个高刷的Detailed resolution，注意显示Timing的参数要跟原厂60Hz的保持一致，然后保存重启应该就有高刷了

这个问题一般是Win系统没有读取到你面板的EDID扩展数据导致高刷丢失，你可以参考我之前的帖子：

Solved: Intel Win11 Graphics Driver No High Refresh Rate(>60HZ) - Intel Community

[Haozhuang]

多谢老哥了，我参考你的贴子并写入了你的EDID文件，现在已经可以开启165hz的刷新率了，我准备去电脑店里使用人家的3060显卡去读取并保存该显示器正确的EDID文件并尝试写入我的电脑看看能否开启240hz。

非常感谢老哥提供的帮助，谢谢。

[Haozhuang]

我使用cru设置240hz刷新率但是无法点ok，而且我还使用了电脑店里3060读取的edid信息，也是无法使用，现在正想尝试你的贴子里安装linux来读取edid信息，不知道是否能行。

[Jeremy_Wu]

你不要用我的EDID，因为我那块165Hz屏像素时钟上限跟你的肯定不一样，所以你用我的EDID最高设置不了240Hz，你在Ubuntu或者Fedora系统里用edid-decode提取你屏幕原生的edid.bin文件，然后在Win系统里用CRU导入应该就有240Hz了，但是有一个问题，如果你用的驱动板是edp-dp直通板，可能2560*1600@240Hz只有6bit色深，因为超过了DP1.4的带宽上限，笔记本屏的面板在笔记本上可以开DSC，但是用edp-dp直通板连接台式独显好像开不了DSC所以只能降色深，但是DP1.4应该可以设置到10bit 175-180Hz左右

2560*1600@240Hz 8bit DSC2560*1600@180Hz 10bit 原生

[Haozhuang]

老哥，我安装了Ubuntu24.04，然后又安装了英特尔显卡驱动，但是分辨率和刷新率无法调整，使用edid-decode也不显示，求指点。

[RandyT_Intel]

Hi @Haozhuang ,

It seems that the issue is still unresolved. I will conduct a more in-depth investigation and coordinate internally to gather more insights. I will update you as soon as I have completed my analysis.

@Jeremy_Wu Thank you for your help, insights, and recommendations. I truly appreciate it.

Regards,

Randy T.

Intel Customer Support Technician

[RandyT_Intel]

Hi @Haozhuang ,

I have reviewed your case and noticed that you mentioned testing with another monitor and an HDMI monitor, both capable of reaching up to 240Hz. This suggests that the issue might be specific to the TL160ADMP03-0 monitor.

To help us better understand the situation, could you please confirm if the problem occurs only when using the TL160ADMP03-0? Additionally, could you provide the make and model of the other monitors you tested?

Thank you for your cooperation.

Regards,

Randy T.

Intel Customer Support Technician

[Haozhuang]

你好

可能你的翻译有问题，我在该显示器上使用别人的rtx3060显卡就可以正常开启240hz，

我的显示器是dp1.4的，带宽不足以支持2560*1600@240hz，所以需要开启DSC，我现在使用cru软件进行设置可以210hz，

那一个HDMI显示器是1920*1080@144hz的，本身带宽可以支持，目前的问题就是A750在TL160ADMP03-0 上不会触发DSC导致没有240hz选项。

Jeremy_Wu 这位老哥分析的问题是对的，用edp-dp直通板连接A750开不了DSC，很大问题是你们的图形驱动程序不兼容该驱动板。

[RandyT_Intel]

Hi @Haozhuang ,

Thank you for the clarification. I will see if I can replicate this issue on our end and check for any similar problems. I'll also coordinate internally regarding the driver compatibility you mentioned with this card. I'll get back to you once I've completed my investigation.

Regards,

Randy T.

Intel Customer Support Technician

[RandyT_Intel]

Hi @Haozhuang ,

Thank you for your continued cooperation. To further assist with your issue, I need additional data from your end. Please follow the steps outlined below to capture the EDID of your display while connected to both the A750 and the RTX3060.

To generate IGCC report for EDID analysis, please follow the steps below:

1) If IGCC is not yet install on the Windows system, download and install the "Intel® Graphics Command Center" from the Microsoft Store.

2) Once installed, launch the Intel® Graphics Command Center (IGCC) software.

3) On the left side of the app, click on "Support" and then on top click "System Diagnostic"

4) To the right, click on "Generate Report" and you will be prompted to save it as a txt file.

5) Save the report which can be used for analysis.

Using IGCC, generate a report (.txt) for each GPU and send them to us. This will help us compare the refresh rates being communicated to each GPU by the display.

I appreciate your assistance in providing this information, as it will help us resolve the issue more effectively.

Regards,

Randy T.

Intel Customer Support Technician

[Haozhuang]

你好

很高兴你能回复我，我想问一下是否有解决方案，比如是否有办法通过注册便或者软件强制开启DSC？

下边文件是你要的使用IGCC生成的GPU报告，这份报告的EDID并非原来的EDID，因为我使用CRU更改了刷新率，希望可以帮助到你。

[RandyT_Intel]

Hi @Haozhuang ,

I'm exploring all possible ways to address your concern. Please allow me some additional time to investigate this issue further. Thank you for providing the requested data; I will now forward it internally to check for available steps and troubleshooting options. I will get back to you once I have results.

Regards,

Randy T.

Intel Customer Support Technician

[RandyT_Intel]

Hi @Haozhuang ,

We checked the EDID report and found that it has been customized. To help us further, we need to check the unmodified version of the IGCC/EDID reports for both your Arc A750 and RTX 3060. Thank you for your cooperation.

Thank you!

Regards,

Randy T.

Intel Customer Support Technician