<<Still posting from Lappy>>
Thanks. I didn't see your reply til after i completed my "PS".
I rebooted Tower, got to hanging 2nd splash again, tried
shift+alt+f12 to deactivate the effects (compositor) -- nothing at all happened / changed.
I toggled to tty, ran your command, & saw:
Quote:Info: the nvidia profile is already in use
Sad, tired.
Holy cow. Given it said "
Info: the nvidia profile is already in use", ie, for whatever reason my previous...
Code:
sudo prime-select intel
... did
not work, i decided to see what would happen if now, in tty, i
repeated the attempted
intel switchover. So i did it, rebooted, &
this time it proceeded to the login screen... but don't cheer yet.
It is
now stuck in 640x480 resolution, & to my shock, in
Settings - Display & Monitor - Displays, that is the ONLY res offered to me. Oh noooooooooooooooo. This is unusable; where are all the other res selections?
So to sum it up: second splash screen means AFTER filling in the login credentials? If yes, then just Plasma is having difficulties to load. What you can do to test it is this:
Code:
when you get to a stuck splash screen, switch to a tty a issue this command
sudo su (enter sudo pwd)
adduser test (follow prompts to create the user, leave rooms and phones empty)
Now you've created a clean vanilla user. Go to the login screen, select that new user and try to login - if it works, means that your Plasma settings are wrong for the intel driver and we need to fix them.
Deleting the created user can be done with command:
Code:
deluser test (as root, after sudo su)
If the answer to the above question was NO and you don't even get to the login screen, then the X server has troubles starting and that is because of the Nvidia driver. When you installed the Nvidia driver, have you also installed the package nvidia-prime? When you issue command
Code:
sudo prime-select intel
what is the response?
"nomodeset" is still in grub. Could that be forcing the intel gpu driver into low-res? Should i try removing it again [at risk of booting back into black screen all over again]?
(21st February 2017, 17:11)kdemeoz Wrote: [ -> ]Holy cow. Given it said "Info: the nvidia profile is already in use", ie, for whatever reason my previous...
Code:
sudo prime-select intel
... did not work, i decided to see what would happen if now, in tty, i repeated the attempted intel switchover. So i did it, rebooted, & this time it proceeded to the login screen... but don't cheer yet.
It is now stuck in 640x480 resolution, & to my shock, in Settings - Display & Monitor - Displays, that is the ONLY res offered to me. Oh noooooooooooooooo. This is unusable; where are all the other res selections?
Ah OK, I see you're faster than me in posting
Anyway, open the konsole, go to /etc/X11/ and see if there is a file called xorg.conf - if yes, post here what it contains. Then check /etc/X11/xorg.conf.d for any files and post their contents. To summarize, there should be NO xorg.conf and in /etc/X11/xorg.conf.d there should be NO files.
(21st February 2017, 17:20)kdemeoz Wrote: [ -> ]"nomodeset" is still in grub. Could that be forcing the intel gpu driver into low-res? Should i try removing it again [at risk of booting back into black screen all over again]?
And yes, DEFINITELY REMOVE nomodeset for intel driver
nomodeset is only for nvidia driver.
Tower is now back in business 
It
was my unintended usage of
nomodeset in
grub that limited the screen resolution. Now it's all good again.
If my stuff-up of the attempted kernel 4.9.9 removal did not cause the last several hours of terror, then i have to assume it was the apparently unsuccessful initial attempt to change from the
nvidia to
intel gpu driver that did cause it. As i wrote a couple of hours ago, after making that initial attempt, it was not at all clear to me that it had succeeded... & IMO, if it had succeeded, i would not have got that boot black screen, which was why i had to then use
nomodeset. Later, indeed only within the past 45', when my 2nd attempt to invoke the intel driver did work*, i'd temporarily forgotten i had to remove
nomodeset again [& now i've learned how horrible the res becomes as a result].
*I assume those hanging splash-screens were coz at that stage neither nvidia or intel gpu drivers were properly activated.
Does that post-mortem seem reasonable?
leszek &
rocky -- i'm sooooooo grateful to you both, again, for rescuing me. I wish i could buy you a beer / scotch / milk / mineral water.
This is my last post in this thread to be made from Lappy, now that Tower is running again. Next post will be my last for the night [tis now 3.15AM here, yawn], will be back on Tower, & will show you some pics for your thoughts / confirmation of what gpu driver is actually active now.
<<Posted from back on Tower; phew!>>
I'm a bit confused/worried about the "FAILED" in the Graphics section. What is your interpretation of what gpu & driver is active pls?:
Code:
Z97-HD3:/$ inxi -Fxz
System: Host: Z97-HD3 Kernel: 4.4.0-63-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: KDE Plasma 5.8.4 (Qt 5.7.0) Distro: Ubuntu 2.1 xenial
Machine: Mobo: Gigabyte model: Z97-HD3 v: x.x Bios: American Megatrends v: F7 date: 12/08/2014
CPU: Quad core Intel Core i7-4790 (-HT-MCP-) cache: 8192 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 28801
clock speeds: max: 4000 MHz 1: 3891 MHz 2: 3963 MHz 3: 3823 MHz 4: 3866 MHz 5: 3956 MHz 6: 3931 MHz
7: 3820 MHz 8: 3976 MHz
Graphics: Card-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller bus-ID: 00:02.0
Card-2: NVIDIA GF119 [GeForce GT 610] bus-ID: 01:00.0
Display Server: X.Org 1.18.4 drivers: nouveau (unloaded: fbdev,vesa) FAILED: intel
Resolution: 1920x1080@60.00hz
GLX Renderer: Gallium 0.4 on NVD9 GLX Version: 3.0 Mesa 12.0.6 Direct Rendering: Yes
This implies Nouveau driver [good, that's what i want], but what actual gpu?
[
attachment=1183]
Ditto...?
[
attachment=1184]
This indicates successful deployment & activation of
rocky's suggested
intel-microcode? [annoying/confusing that
Driver Manager wrongly(?) implies i'm using Nvidia rather than Nouveau driver].
[
attachment=1185]
Bed now. Once sun's up again, i'll try to get new kernel 4.8 HWE by running:
Code:
sudo apt-get install --install-recommends xserver-xorg-hwe-16.04
Seems you still use nouveau driver. In order to prevent this you have to blacklist it as described in article
http://askubuntu.com/questions/481414/in...ad-nouveau
Seems you haven't installed the Nvidia driver correctly, because it should do the blacklisting itself. So either try to reinstall it or do the blacklisting yourself.