Arch Linux

mrpinkolik

Member

Registered: 2023-01-21

Posts: 20

Re: Laptop HDMI external display not being detected

Just for reference, this is what a successful custom EDID load looks like in the logs:

... kernel: [drm] Got external EDID base block and 0 extensions from "edid/edid48.bin" for connector "eDP-1"

Edit: As a sanity check, I'd try using a Fedora or Ubuntu desktop iso to boot a live system and see if the monitor is detected.

Thank you. I'll try that out and tell you outcome of this experiment later

seth

Member

Registered: 2012-09-03

Posts: 51,017

Re: Laptop HDMI external display not being detected

No PXP, but still the same module warnings.

Looks like a common issue:
https://gitlab.freedesktop.org/drm/intel/-/issues/6793 (dupe of)
https://gitlab.freedesktop.org/drm/intel/-/issues/5531
https://gitlab.freedesktop.org/drm/intel/-/issues/7402

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mrpinkolik

Member

Registered: 2023-01-21

Posts: 20

Re: Laptop HDMI external display not being detected

No PXP, but still the same module warnings.

Looks like a common issue:
https://gitlab.freedesktop.org/drm/intel/-/issues/6793 (dupe of)
https://gitlab.freedesktop.org/drm/intel/-/issues/5531
https://gitlab.freedesktop.org/drm/intel/-/issues/7402

So I guess, I'll have to wait until kernel 6.2.0 is released?

seth

Member

Registered: 2012-09-03

Posts: 51,017

Re: Laptop HDMI external display not being detected

How do you come to this conclusion?
I only briefly skimmed those bugs, but didn't see a pending fix mentioned?

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

mrpinkolik

Member

Registered: 2023-01-21

Posts: 20

Re: Laptop HDMI external display not being detected

How do you come to this conclusion?
I only briefly skimmed those bugs, but didn't see a pending fix mentioned?

Here https://gitlab.freedesktop.org/drm/intel/-/issues/5531

Thank you very much, Johan. I'll give it a try. I suppose kernel 6.2.0 will eventually have these patches merged anyway, isn't it ?

I've tested your kernel and I can report this:

    HDMI works
    suspend/resume works
    Thunderbolt with external monitor works
    Dynamic Graphics (i915 and NVidia on) does allow to change/save brightness and scrren refresh rate is 60Hz
    Discrete Graphics (only NVidia on) does NOT allow to change/save brightness, but screen refresh rate can be raised to 165Hz

@johanvf Do you want me to perform some other test or report some data back to you ? I'd like to thank you for this kernel and contribute with anything you find valuable.

"HDMI works" was more than enough for me