So I've been fiddling with a "hybrid" sources list of groovy/devel and I ran into a "hunk patch" error a week back or so while doing an apt update/upgrade, and there has been a bcwl??? wifi related error from the get go. Today I ran an apt update/dist-upgrade got a few packages and ran an "autoremove" and I checked uname -r and it was still showing 5.4 kernel . . . ??
So I was trying to remember where to find the kernels that are installed or available and got into the "software sources" app and while I was there I checked the "pre-release groovy packages" box and the "reload the cache" window opened . . . and then it "hung" . . . had to try multiple times to close the app to close the cache window.
I then ran another, in this case, "apt update/upgrade" and that pulled about 200 packages, so I ran through that, it showed a "5.8" kernel as being installed in my '12 Mac Pro multi-boot situation . . . I ran another "autoremove" and it removed some things and then ran through the grub listing, finding all of the 5 distros that I have installed . . . .
I then rebooted and the grub menu failed to show, this happened previously with U-MATE several times now while doing updates/upgrades the grub menu gets wiped and only U-MATE will boot . . . so we got to the "MOK failed to load window" . . . and then we went to a black screen . . . ??? The display power light is "blue" showing "signal" . . . but black is all we see. I tried to get to a TTY but black is all I see . . . .
I hit the power button briefly and, hmm . . . MATE splash window appears with the blinking dots . . . and then shuts down.
I cold booted and again same thing . . . I even tried to type my password into the blackness to see if it would log me in . . . again tried the TTY keystrokes . . . nothing but "the blackness" . . . again hit the power button, same thing, splash appears then machine shuts down.
I'm over in OSX system to post this thread. Something in the install did not seem to mix well with the "pre-release packages" item . . . seems like the install is "busted down" . . . and in the process grub got messed up, just like it did last week. There is a bug report on "grub menu not appearing" but devs don't seem to be "working on it" . . . but I don't have this grub problem in Lu 20.10, or TW, or manjaro . . . only u-MATE seems to erase everyone else from grub . . . and now it seems to have erased video??? except for when it is powering down, then the splash appears on the display nice and crispy??
I don't know if at some point I could "chroot" over into U-MATE to see if something is repairable, OR . . . it's done blown up . . . start freshly, etc?? But right now can't log in, can't get to TTY?? Not sure if there is a way to get "single user" to work for U-MATE since I have a bunch of systems installed??
Any thoughts appreciated???