# Display lag AMD 13 7040 USB-C dock - Linux 6.11

**URL:** <https://community.frame.work/t/display-lag-amd-13-7040-usb-c-dock-linux-6-11/59787>\
**Category:** Linux\
**Tags:** nixos\
**Created:** [October 31, 2024, 7:54am UTC](https://community.frame.work/t/display-lag-amd-13-7040-usb-c-dock-linux-6-11/59787 "2024-10-31T07:54:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Gaetan\_Lepage](https://avatars.discourse-cdn.com/v4/letter/g/a698b9/32.png) [@Gaetan\_Lepage](https://community.frame.work/u/Gaetan_Lepage)\
**Post date:** [October 31, 2024, 7:54am UTC](https://community.frame.work/t/display-lag-amd-13-7040-usb-c-dock-linux-6-11/59787/1 "2024-10-31T07:54:48Z")

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I have started noticing severe lag when using an external display via my Lenovo/ThinkPad USB-C dock.

## Hardware setup

- Framework AMD 13 (7040)
- ThinkPad USB-C dock
- Single external 2560x1440 screen connected via HDMI

## Behavior

The resolution is correct, but there is a massive display lag which makes the setup basically unusable.  
It is like I had 10fps and a massive input lag on my devices.

## Potential causes

If I boot with the LTS kernel (6.6), it works fine.  
However, it fails with the latest kernel (6.11.5 at the time of writing).

If I remember well, the issue appeared sometime between mid-September and early October.  
I have not (yet) bisected the exact kernel change that causes the problem.

## Detailed software setup

- **Distribution:** NixOS 24.11 (unstable)
- **Kernel:** `pkgs.linuxPackages_latest` (i.e. 6.11.5 today)
- **BIOS revision:** 3.5

Thanks in advance for your help !

* * *

EDIT: could be [Making sure you're not a bot!](https://gitlab.freedesktop.org/drm/amd/-/issues/3647)

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<div class="post-metadata">

**Author:** ![Gaetan\_Lepage](https://avatars.discourse-cdn.com/v4/letter/g/a698b9/32.png) [@Gaetan\_Lepage](https://community.frame.work/u/Gaetan_Lepage)\
**Post date:** [November 2, 2024, 12:02am UTC](https://community.frame.work/t/display-lag-amd-13-7040-usb-c-dock-linux-6-11/59787/2 "2024-11-02T00:02:56Z")

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I can confirm that the 6.10 kernel does work fine.

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<div class="post-metadata">

**Author:** ![Gaetan\_Lepage](https://avatars.discourse-cdn.com/v4/letter/g/a698b9/32.png) [@Gaetan\_Lepage](https://community.frame.work/u/Gaetan_Lepage)\
**Post date:** [November 7, 2024, 1:49pm UTC](https://community.frame.work/t/display-lag-amd-13-7040-usb-c-dock-linux-6-11/59787/3 "2024-11-07T13:49:39Z")

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This other AMD driver issue may also be the culprit:

> **[Slow framerate regression on monitor connected through USB dock (bisected to...](https://gitlab.freedesktop.org/drm/amd/-/issues/3720)**
>
> Brief summary of the problem: The general symptom is slow framerate or choppy/laggy performance on monitors connected through a USB dock....

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**Author:** ![system](https://us1.discourse-cdn.com/flex001/uploads/framework3/original/1X/64c81a89f963ddb07633887baceb642a4b056046.png) [@system](https://community.frame.work/u/system)\
**Post date:** [May 6, 2025, 1:49pm UTC](https://community.frame.work/t/display-lag-amd-13-7040-usb-c-dock-linux-6-11/59787/4 "2025-05-06T13:49:51Z")

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