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Web browser access to iPad Pro 11" (3rd Gen) has screen flicker #510

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opened 2026-02-20 14:00:37 -05:00 by deekerman · 4 comments

deekerman commented

2026-02-20 14:00:37 -05:00

Owner

Originally created by @fxbulldog on GitHub (Aug 8, 2022).

Originally assigned to: @mdevaev on GitHub.

Describe the bug
Screen flickers to the point that it is not usable. Flicker = screen is seen then not seen (No Signal) every 10 seconds. Occurs on both local connection and port forwarded connection.

To Reproduce
Both video (MJPEG/HTTP & H.264 / WebRTC) modes tried.

Try 1 (Using Apple USB-C to Digital AV):
Connected to KVM switch select GPIO input (Screen Flicker)
Rebooted PiKVM and Switch (Screen Flicker)
Connected direct to PiKVM as a single source (Screen Flicker)

Try2 (Using Akhara USB-C to Digital AV):
Connected direct to PiKVM as a single source (Screen Flicker)

Try3 (Using Dell Thunderbolt Dock WD19TBS):
Connected direct to PiKVM as a single source (Screen Flicker)

Expected behavior
No screen flicker

Desktop
macOS 12.5
Safari 15.6 / Firefox 103.0.1

win10 21H1
Firefox 103.0.1 / Edge 104.0.1293.47

PiKVM info:
PiKVM v3 Pre-Assemble
KVMD: 3.61
Streamer: 5.1 (ustreamer)
HAS_PDEATHSIG: Yes
WITH_GPIO: Yes
WITH_PTHREAD_NP: Yes
WITH_SETPROCTITLE: Yes
WITH_SYSTEMD: Yes
Linux kernel:
Machine: armv7l
Release: 5.15.25-10-rpi-ARCH
Version: #1 SMP Wed Mar 16 06:04:18 MSK 2022
ezcoo HDMI 2.0 KVM Switch 4x1
iPad Pro 11" (3rd Gen) IOS 15.5
Enabled Dual mouse mode - Had to select Relative to get the mouse to work.

Originally created by @fxbulldog on GitHub (Aug 8, 2022). Originally assigned to: @mdevaev on GitHub. **Describe the bug** Screen flickers to the point that it is not usable. Flicker = screen is seen then not seen (No Signal) every 10 seconds. Occurs on both local connection and port forwarded connection. **To Reproduce** Both video (MJPEG/HTTP & H.264 / WebRTC) modes tried. Try 1 (Using Apple USB-C to Digital AV): Connected to KVM switch select GPIO input (Screen Flicker) Rebooted PiKVM and Switch (Screen Flicker) Connected direct to PiKVM as a single source (Screen Flicker) Try2 (Using Akhara USB-C to Digital AV): Connected direct to PiKVM as a single source (Screen Flicker) Try3 (Using Dell Thunderbolt Dock WD19TBS): Connected direct to PiKVM as a single source (Screen Flicker) **Expected behavior** No screen flicker **Desktop** macOS 12.5 Safari 15.6 / Firefox 103.0.1 win10 21H1 Firefox 103.0.1 / Edge 104.0.1293.47 **PiKVM info:** PiKVM v3 Pre-Assemble KVMD: 3.61 Streamer: 5.1 (ustreamer) HAS_PDEATHSIG: Yes WITH_GPIO: Yes WITH_PTHREAD_NP: Yes WITH_SETPROCTITLE: Yes WITH_SYSTEMD: Yes Linux kernel: Machine: armv7l Release: 5.15.25-10-rpi-ARCH Version: #1 SMP Wed Mar 16 06:04:18 MSK 2022 ezcoo HDMI 2.0 KVM Switch 4x1 iPad Pro 11" (3rd Gen) IOS 15.5 Enabled Dual mouse mode - Had to select Relative to get the mouse to work.

deekerman

2026-02-20 14:00:37 -05:00

closed this issue
added the
resolution:fixed

type:question
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deekerman commented

2026-02-20 14:00:39 -05:00

Author

Owner

@fxbulldog commented on GitHub (Aug 8, 2022):

pacman updated PiKVM to the latest

It is better in the MJPEG/HTTP video mode in that is does not go to no signal and just fades for 1sec instead. Makes it usable but not pleasant especially with relative mouse mode.

Still learning what the nuances are but looks like the mouse will not click after a bit of use (~10 drops?). Tried resetting HID but no joy. Waiting ~5min then logging back into the iPad sometimes brought the click back other times switching GPIO inputs did.

KVMD: 3.134
Streamer: 5.19 (ustreamer)
HAS_PDEATHSIG: Yes
WITH_GPIO: Yes
WITH_PTHREAD_NP: Yes
WITH_SETPROCTITLE: Yes
WITH_SYSTEMD: Yes
Linux kernel:
Machine: armv7l
Release: 5.15.34-4-rpi-ARCH
Version: #1 SMP Tue Jul 5 12:10:16 MSK 2022

@fxbulldog commented on GitHub (Aug 8, 2022): pacman updated PiKVM to the latest It is better in the MJPEG/HTTP video mode in that is does not go to no signal and just fades for 1sec instead. Makes it usable but not pleasant especially with relative mouse mode. Still learning what the nuances are but looks like the mouse will not click after a bit of use (~10 drops?). Tried resetting HID but no joy. Waiting ~5min then logging back into the iPad sometimes brought the click back other times switching GPIO inputs did. KVMD: 3.134 Streamer: 5.19 (ustreamer) HAS_PDEATHSIG: Yes WITH_GPIO: Yes WITH_PTHREAD_NP: Yes WITH_SETPROCTITLE: Yes WITH_SYSTEMD: Yes Linux kernel: Machine: armv7l Release: 5.15.34-4-rpi-ARCH Version: #1 SMP Tue Jul 5 12:10:16 MSK 2022

deekerman commented

2026-02-20 14:00:39 -05:00

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Owner

@arch1mede commented on GitHub (Aug 11, 2022):

Hi, the tablet experience still needs to be worked on, the dev is aware but is not a priority at the moment. I have found that activating VNC+using a VNC client is a much better experience. Please see this page.

My VNC client of choice is Jump but its a little pricey.

@arch1mede commented on GitHub (Aug 11, 2022): Hi, the tablet experience still needs to be worked on, the dev is aware but is not a priority at the moment. I have found that activating VNC+using a VNC client is a much better experience. Please see this [page.](https://docs.pikvm.org/vnc/) My VNC client of choice is Jump but its a little pricey.

deekerman commented

2026-02-20 14:00:39 -05:00

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Owner

@mdevaev commented on GitHub (Oct 6, 2022):

Could you show journalctl -u kvmd on flickering?

@mdevaev commented on GitHub (Oct 6, 2022): Could you show `journalctl -u kvmd` on flickering?

deekerman commented

2026-02-20 14:00:39 -05:00

Author

Owner

@mdevaev commented on GitHub (Nov 10, 2022):

I've tried iPad Pro 12.9 with the official Apple USB->HDMI converter and everything is working great.

Also no answer from the issue author, so I'm closing this.

@mdevaev commented on GitHub (Nov 10, 2022): I've tried iPad Pro 12.9 with the official Apple USB->HDMI converter and everything is working great. Also no answer from the issue author, so I'm closing this.