* Bagas Sanjaya (bagasdotme@xxxxxxxxx) wrote: > Hi, > > I notice a regression report on Bugzilla [1]. Quoting from it: > > > > > In the latest 6.3 and 6.4, it is impossible for me to boot my laptop if my DELL U2720Q monitor is plugged in (USB-C). I have to unplug it, then boot. As soon as the first second of boot went through, I can plug in my monitor and there is no issue afterward. There is no issue waking up after suspend. Only when it boots. > > > > See the attached pictures of the trace. The trace itself seems random (at least to me :)). I tried several things, like removing any attached USB devices from the monitor built-in USB-hub, but that does not change anything. (there is a keyboard and trackpad attached). > > See Bugzilla for the full thread. > > Unfortunately, the reporter can only provide photos of kernel trace > (as he doesn't have any other means to extract kernel logs, maybe > connecting over serial helps; see Bugzilla for these attachments). I note the photos have 'crud' at the bottom; as if something interesting is in the video ram; perhaps something is freaked out by this nice 4k monitor and some useful data structures are ending up in video ram. (Also note it's a librem with pureboot) Dave > > Anyway, I'm adding it to regzbot so that it doesn't fall through > cracks unnoticed: > > #regzbot introduced: v6.1..v6.3 https://bugzilla.kernel.org/show_bug.cgi?id=217637 > #regzbot title: unable to boot with Dell U2720Q monitor attached > > Thanks. > > [1]: https://bugzilla.kernel.org/show_bug.cgi?id=217637 > > -- > An old man doll... just what I always wanted! - Clara -- -----Open up your eyes, open up your mind, open up your code ------- / Dr. David Alan Gilbert | Running GNU/Linux | Happy \ \ dave @ treblig.org | | In Hex / \ _________________________|_____ http://www.treblig.org |_______/
