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I'd like to mention a problem I faced when trying linux-lts (kernel 3.14). I had the "linux" kernel installed (4.0). If someone has an idea on what happened, please share.
sudo pacman -S linux-lts, then
grub-mkconfig -o /boot/grub/grub.cfg, reboot, choose the lts-kernel. I can login to the desktop (lxde, lxqt and i3 are all working). Then reboot, pick any of linux or linux-lts kernels. And here the problem starts: black screen.
I tried to debug the booting process by following https://wiki.freedesktop.org/www/Softwa … Debugging/. I couldn't resolve anything.
By luck I thought "what if it's the login manager (lxdm) that's black?", and so I tried to aim at the middle of the screen with the mouse on the 100% black screen, I entered my password and "boom" I was on the lxqt desktop!
I rebooted, same problem. But by trying to guess where the password box was, I could login to my desktop. To fix the problem at first, I did remove linux-lts, reinstalled linux with pacman, removed lxdm and its systemd service, installed sddm and enabled its service, regenerated the grub.cfg file. Rebooting worked, no black screen.
At that point I thought "well it might just have been lxdm not working well with linux-lts so let's try to install it again, since now I have sddm". Huge mistake... After reinstalling linux-lts, booting in it, rebooting lead again to a black screen on boot up. This time however trying to aim at the box to enter my password was impossible: I was not used to sddm so I didn't know where to click. I tried the "tab" key around 20 times, entering my password each time, without success. So I ended up using the live Arch.iso version on a usb flash drive to remove the linux-lts, sddm (yeah I went for lxdm again), etc. by chrooting. This worked again: no more black screen.
The irony is that I installed that kernel thinking of increasing the stability of Arch on my laptop. It ended up breaking the booting process of both kernels!
And since I want to understand Linux in general, I am posting this in hopes that it could help someone else facing this problem and also in hopes that someone can explain me what could have happened. Because as of now I don't understand how lxdm and sddm could appear black in both kernels when rebooting from the linux-lts kernel.
Thanks for any pointer.
Last edited by linux_dream (2015-05-28 15:57:02)
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