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Ubuntu 10.04, screen is black after locking screen

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#1
Today my ubuntu 10 workstation has been acting strange. First when locking the screen, i come back and hit my usual spacebar to activate the login window, the mouse just flickers on and off. I have to restart gdm at this point. What then happened was the dual monitor setup got off. I opened the nvidia control panel and set it to the one where each monitor is seperate (forget the name). I didnt like that, so set to twin view which could never properly work. The monitors were getting odd display signals, and the refresh rate was bad. So i removed the nvidia driver and went back to using preferences > monitors. So the monitor setup is fine now, just the locking issue still occurs. The video card is an nvidia quattro of some sort.

I later noticed that there were two screensaver applets. I removed screensaverx, then i couldnt lock at all. After that i reinstalled gdm and ubuntu-desktop. I can lock again, but the same problem occurs with the black screen and mouse flicker. I have to restart gdm to login.
 

Easy Rhino

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#2
that is strange. could be a driver issue, but if it just started happening then it could be anything. do you have compiz running?
 
Joined
Mar 31, 2007
Messages
1,895 (0.48/day)
Likes
162
Location
ontario canada
System Name home brew
Processor Intel Corei7 3770K OC @ 4.5Ghz
Motherboard ASUS P8Z77-V
Cooling Corsair H100
Memory 16GB DDR3 1600 GSKILL
Video Card(s) Powercolor Radeon 7970, MSI Radeon 7970
Storage Mushkin Chronos Deluxe 240gb. 2 TB Hdd.
Display(s) 3x24inch Dell Ultra IPS
Case CM storm trooper
Power Supply Antec Quattro OC ed. 1200w
Software Windows 7 Business x64
Benchmark Scores vantage: P43089
#3
Nah no compiz. One other problem, i doubt its related but hey never know: the psu is nearing death i think. It occasionally puts my comp to sleep on its own, and when ever i shutdown the computer and then hit the power button to turn it on, there's a delayed start; 30 seconds or so.
 

Easy Rhino

Linux Advocate
Joined
Nov 13, 2006
Messages
14,414 (3.53/day)
Likes
4,275
System Name VHOST01 | Desktop
Processor i7 980x | i5 7500 Kaby Lake
Motherboard Gigabyte x58 Extreme | AsRock MicroATX Z170M Exteme4
Cooling Prolimatech Megahelams | Stock
Memory 6x4 GB @ 1333 | 2x 8G Gskill Aegis DDR4 2400
Video Card(s) Nvidia GT 210 | Nvidia GTX 970 FTW+
Storage 4x2 TB Enterprise RAID5 |Corsair mForce nvme 250G
Display(s) N/A | Dell 27" 1440p 8bit GSYNC
Case Lian Li ATX Mid Tower | Corsair Carbide 400C
Audio Device(s) NA | On Board
Power Supply SeaSonic 500W Gold | Seasonic SSR-650GD Flagship Prime Series 650W Gold
Mouse N/A | Logitech G900 Chaos Spectrum
Keyboard N/A | Posiden Z RGB Cherry MX Brown
Software Centos 7 | Windows 10
#4
Nah no compiz. One other problem, i doubt its related but hey never know: the psu is nearing death i think. It occasionally puts my comp to sleep on its own, and when ever i shutdown the computer and then hit the power button to turn it on, there's a delayed start; 30 seconds or so.
hrm. could be. doesnt sound like a problem with the OS.
 
Joined
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Messages
1,895 (0.48/day)
Likes
162
Location
ontario canada
System Name home brew
Processor Intel Corei7 3770K OC @ 4.5Ghz
Motherboard ASUS P8Z77-V
Cooling Corsair H100
Memory 16GB DDR3 1600 GSKILL
Video Card(s) Powercolor Radeon 7970, MSI Radeon 7970
Storage Mushkin Chronos Deluxe 240gb. 2 TB Hdd.
Display(s) 3x24inch Dell Ultra IPS
Case CM storm trooper
Power Supply Antec Quattro OC ed. 1200w
Software Windows 7 Business x64
Benchmark Scores vantage: P43089
#5
Well ive tried swapping some spare video cards that are around. One was an ATI from a mac desktop. And apparently their bootroms from back in the day were set to only work with macs; that you cant see the usual BIOS boot info. I tried that, and couldnt get the OS to show. I tried an ati x550 that was around as well. One of my monitors had half the screen black, and the half that wasnt black was fuzzy. I thought maybe it was the vga - dvi converter i had on the dvi port. So i swapped that and then the monitor said no video signal. So i just threw my fx330 back in so i could get some work done.

Now they found me an 8800gt which ill try out tomorrow. But even if the monitor stuff gets fixed, im thinkin the locking issue will still be there.

I did swap to another machine as well, where the psu is in better shape. No more delayed power ups.