Arch Linux

tuckerk

Member

Registered: 2020-04-27

Posts: 2

Linux media interface slow to start

Hi all,

I've been having a few issues recently, possibly tied to a recent update, but I've not been able to track down which. My laptop keyboard works immediately after boot, but my usb keyboard does not. My webcam also does not work. Lastly, my wifi has stopped working after resuming from suspend (I'm not sure if this is related).

I've tracked down the USB and webcam issue to a point in my dmesg logs where I get

[Mar26 11:11] mc: Linux media interface: v0.10

after this a few usb and camera related logs messages show up and the keyboard and camera work.

It looks like the media interface is part of the kernel, but I dont know what to do with that information other than possibly downgrading the version I'm using. From what I've seen downgrading the kernel can be a bit of a process if other packages need downgrading too. so I'm hesitant to do that.

If anyone has suggestions on where to look next or what to do I'd greatly appreciate it.

Full logs are here. pacman -Q list is here

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,343

Re: Linux media interface slow to start

I'd start testing without all of these acpi/mem sleep overrides. They are hacks that might've been invalidated by new kernel developments.

Other than that if you want to test a kernel downgrade, the only thing that would be affected by this from a quick check would be the nvidia packages, which is relatively trivial to workaround if you install both the linux and relevant linux-headers package of the kernel you'd downgrade to and installing nvidia-dkms instead of nvidia. Even so you might want to test the LTS kernel first which will be easier to setup (... you'd still need nvidia-lts at least)

tuckerk

Member

Registered: 2020-04-27

Posts: 2

Re: Linux media interface slow to start

Thank you for your response! I removed all of the kernel parameters except quiet splash loglevel=3, but that did not fix the usb keyboard issue. I've since put back only the ones I still need. I've also moved over to Arch-lts, and that has also not fixed the issue. Thank you for both suggestions tho, I'm sure they will save me some headache down the road.

While messing around with the boot parameters I noticed that my usb keyboard works in GRUB, but stops working by the time my login screen loads. That has given me a few new things to search, but so far I haven't found a solution. I will keep looking in a few days and post which potential solutions I try and their effect. For now here is my latest dmesg output. Nothing new stands out.

Last edited by tuckerk (2021-04-02 23:15:04)