LinuxQuestions.org
Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Ubuntu
User Name
Password
Ubuntu This forum is for the discussion of Ubuntu Linux.

Notices


Reply
  Search this Thread
Old 05-04-2018, 02:04 PM   #1
linuxuser7
Member
 
Registered: Apr 2018
Location: Ohio, USA
Distribution: openSUSE Tumbleweed, Ubuntu 18.04, Scientific Linux 7.5
Posts: 72

Rep: Reputation: Disabled
Problems with lock screen freezing


As I posted elsewhere, I have installed Ubuntu 18.04 alongside another Linux (dual-boot system). My computer has an AMD A12 processor with Radeon R7 graphics. I have installed the Oibaf driver, but that doesn't seem to improve anything.

I've been having a lot of problems with the Ubuntu installation. The problem I'd like to address right now is that about one out of three times when I close the lid on my laptop and go to open it again, I get a hash of colors and the screen is frozen and I can't log back into Ubuntu and have to forcefully turn it off without shutdown. I don't know if the computer itself is frozen because I have no way of getting past the frozen screen.

I also sometimes notice this hash when switching out of full screen mode in Totem, but thankfully the screen doesn't freeze.

This also can happen when the computer is awakened after sleep. This is intolerable to me because I can't afford to constantly be losing all my work every time this happens.

Any ideas?

I appreciate any help you can give.
 
Old 05-05-2018, 09:51 AM   #2
linuxuser7
Member
 
Registered: Apr 2018
Location: Ohio, USA
Distribution: openSUSE Tumbleweed, Ubuntu 18.04, Scientific Linux 7.5
Posts: 72

Original Poster
Rep: Reputation: Disabled
This might be just an indication of a more general problem and the color hash might be misleading. This morning, the computer went to sleep because I closed the lid. When I opened the lid, the lock screen was blank. Totally blank. No hash, nothing. Again, this is unacceptable to me because I lost all my work again. I have set the computer not to sleep on lid close, but I really would like to find a solution and not just a workaround..

So I guess my question has to do with how to I remedy a computer not coming back from sleep?

I still believe that it is the screen that's frozen because I can hear the hard drive clicking.
 
Old 05-06-2018, 02:14 PM   #3
linuxuser7
Member
 
Registered: Apr 2018
Location: Ohio, USA
Distribution: openSUSE Tumbleweed, Ubuntu 18.04, Scientific Linux 7.5
Posts: 72

Original Poster
Rep: Reputation: Disabled
I found the cause of this problem and other problems I've been having. Believe it or not, it was the video driver. The Linux drivers for AMD Radeon R7 graphics have problems. I installed the new driver for Ubuntu 18.04 (still beta) from AMD, and all my problems went away.

Interestingly, I did not have such problems with Scientific Linux (Enterprise Linux) and I didn't install any proprietary drivers so they are doing something right.
 
Old 05-14-2018, 04:48 PM   #4
linuxuser7
Member
 
Registered: Apr 2018
Location: Ohio, USA
Distribution: openSUSE Tumbleweed, Ubuntu 18.04, Scientific Linux 7.5
Posts: 72

Original Poster
Rep: Reputation: Disabled
I thought I had the problem solved, but it raised it's ugly head again. This did work though

Code:
gdm3 -reset
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
BLFS 7.9 Plasma 5 lock screen problems ordealbyfire83 Linux From Scratch 2 12-05-2016 09:08 AM
Disable lock session (lock screen) when switch user in KDE 4.x Murz Linux - Desktop 4 12-01-2010 08:28 AM
Num lock OFF and Caps & Screen Lock ON at Linux startup. Reversing? peteyperson Linux - Newbie 2 02-28-2009 11:44 AM
FC7 problems, screen lock, log out, mail notification jovie Fedora 1 09-18-2007 10:49 AM
Lock-up/freezing problems. rossi46 General 2 11-10-2006 07:35 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Ubuntu

All times are GMT -5. The time now is 03:10 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration