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I have ubuntu 20.04.1 LTS (just upgraded), with dual boot system. Since lately I can not get ubuntu to boot. It gets stuck after grub menu - with black screen and only one line: Ubuntu: clean, 100936/2949120 files, 9304228/11796400 blocks.

I read similar threads here on Ask ubuntu and it seems to be some kind od video graphics problem. It is the same with new and older kernels.

Also worth mentioning: during upgrade I had to remove xserver-xorg-video and colord package.

After some research I found out I have Radeon HD 4650 and not Nvidia graphic card. This seems to be connected with removed xserver-xorg.-video package?

ubuntu-drivers device

does nothing

sudo apt install xserver-xorg-video-nouveau

gets me error: unmet dependencies (xorg-video-abi-24 and xserver-xorg-core (but it is not going to be installed)). Unable to correct problems, you have held broken packages.

dpkg --get-selections | grep hold

does nothing

Update: I managed to install Radeon driver and xserver-xorg-video-nouveau + colord packages. I did it inside normal boot (in recovery boot I somehow couldn't get internet connection). So I have all installed, but problem is the same. I get stuck on boot.

I also tried editing grub menu in linux line - adding nomodeset, nouveau.noaccel=1 and replacing "quiet splash" with noapic noacpi nosplash irqpoll. No result.

Please help me, I can not use ubuntu.

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  • I did almost anything from that thread, but no result – Mersault Oct 7 '20 at 14:43
  • boot into recovery mode ... at its menu pick to connect to network ... then pick root prompt ... then run ... sudo apt purge 'nvidia-*' ... then run ubuntu-drivers devices to list available graphics drivers ... you should see xserver-xorg-video-nouveau if so issue sudo apt install xserver-xorg-video-nouveau .... above will remove nvidia and give you the open source nouveau driver ... reboot and you should be OK – Scott Stensland Oct 7 '20 at 16:44
  • I get error when installing xserver...unmet dependencies (xorg-video-abi-24 and xserver-xorg-core (but it is not going to be installed)). Unable to correct problems, you have held broken packages. – Mersault Oct 7 '20 at 16:54
  • update your question ( not as comment ) with output of running ... dpkg --get-selections | grep hold ... then install the package(s) it lists ... then reissue above mentioned xserver-xxx – Scott Stensland Oct 7 '20 at 20:28
  • I get nothing from running that... – Mersault Oct 8 '20 at 5:45
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What finally solved my problem, was installing gdm3 package, which was "broken or not fully installed". I had to do it from normal boot and not revovery.

Now I got system settings and all back:)

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just user live pendrive and install boor repair

sudo apt-get install -y boot-repair && boot-repair

source: https://help.ubuntu.com/community/Boot-Repair

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  • I get error: Unable to correct problems, you have held broken packages. – Mersault Oct 7 '20 at 14:45
  • reinstall ubuntu with proper partitions . – Shah Vipul Oct 8 '20 at 6:59
  • How would that influence on my ubuntu files, settings,...? – Mersault Oct 8 '20 at 11:38
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A good strategy is to discard all proprietary graphics drivers ( nvidia ) and revert to using the tried and true open source drivers ( nouveau ) ... so lets boot into recovery mode ... at its menu ... pick to connect to network

then pick root prompt ... then run

sudo apt purge 'nvidia-*'

sudo apt-get autoremove  # critical step to remove all libnvidia*

to confirm all nvidia packages are gone issue

dpkg -l | grep nvidia  #  commandA

if above shows any packages then remove them too ... as per

apt-get purge xxxxxx  #  where xxxxx is an nvidia package listed commandA

do above command for each package listed in output of above commandA ... then run

ubuntu-drivers devices #  to list available graphics drivers

you should see xserver-xorg-video-nouveau if so issue

sudo apt install xserver-xorg-video-nouveau

if you see Unable to correct problems, you have held broken packages then issue

sudo apt-get -f install

this will list the held packages

dpkg --get-selections | grep hold

then install the package(s) it lists ... then reissue above mentioned xserver-xxx

reboot and you should be OK ... issue this to confirm what video driver you are using

sudo lshw -c video 

PS. I just took a perfectly happy laptop which was using nvidia and did above steps to cut over to using nouveau and it worked just fine - no held or broken packages

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  • First time I got message after sudo apt-get - f install, that I have package that it is no more needed (libxnvctrl0) and to do sudo apt autoremove. I did that and now after sudo apt-get -f install I don't get anything. But xserver-xorg... does not install (unmet dependencies: xorg-video-abi-24, xserver-xorg-core (is not gling to be installed) and recommends libgl1gmesa-dri (is not going to be installed))... – Mersault Oct 8 '20 at 13:01
  • @Mersault see updated steps I just added sudo apt-get autoremove which is critical see above – Scott Stensland Oct 8 '20 at 16:26
  • Did everything again with autoremove. Same result. My video shows RV730 (Radeon HD 4650) with configuration field only latency=0 and no drivers. – Mersault Oct 8 '20 at 16:53

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