[Bug 1908139] Re: ThinkPad T14s external display not working on ThinkPad USB-C Dock Gen2

The issue seems to have been resolved for me with 5.13.0-7620, while it was still broken with 5.13.0-7614. I realize these are System76 specific kernels, but maybe the trend is the same for the corresponding 5.13.0-20 and 5.13.0-14. -- You received this bug notification because you are a member

[Bug 1908139] Re: ThinkPad T14s external display not working on ThinkPad USB-C Dock Gen2

Thanks for that. Happy to report that 5.14.0-051400rc5drmtip20210809-generic works for me. Also happy to provide specific logging of DRM of the working 5.8.0-7642-generic or 5.14.0-051400rc5drmtip20210809-generic and the not working 5.11.0-25-generic. -- You received this bug notification

[Bug 1908139] Re: ThinkPad T14s external display not working on ThinkPad USB-C Dock Gen2

I seem to have very similar issues. Using a Lenovo ThinkPad X1 Carbon 7th gen and ThinkPad USB-C Dock Gen 2. But I also see this on a different docking station. I'm pretty sure they are both using USB-C DP- alt mode. When I boot my laptop connected to the docking stations, I can see BIOS POST

[Bug 1848490] Re: eoan: alsa/sof: Enable SOF_HDA link and codec

Also using a Lenovo X1 7th generation. I can confirm that everything works using 5.3.0-20. I suspect that I've compared to Joel above me, taken a few extra steps: * Added snd_hda_intel and snd_soc_skl to /etc/modprobe/blacklist.conf * Added the alsa-ucm files from [1] to /usr/share/alsa/ucm/sof-

[Bug 1848490] Re: eoan: alsa/sof: Enable SOF_HDA link and codec

I can confirm this is currently an issue on the Lenovo X1 Carbon 7th gen. I did some testing with the current 19.10 kernel (5.3.0-18-generic), and posted my results to this github issue for the SOF project [1]. They confirmed this is most likely an issue with the kernel config for Ubuntu. And

[Bug 1403152] Re: unregister_netdevice: waiting for lo to become free. Usage count

Dear Dan, user reshen on the github Docker issue thread [1] did some extensive testing using kernel 4.8.8. He has not been able to reproduce the issue using that version. I've also done testing using the ubuntu mainline kernel builds and also not been able to reproduce the issue anymore. He has

[Bug 1403152] Re: unregister_netdevice: waiting for lo to become free. Usage count

Dan, thanks for your work. I've tried your PPA with the included patch (4.4.0-36-generic #55hf1403152v20160916b1-Ubuntu). As I've also reported on the Github docker issue [1], this does not fix the issue for me. Would it help you test again with this patch, and with your debug patches included?