I have strange problem, when I wake laptop from sleeping. All Windows or messages have this strange pixels around them:    Sometimes it helps if I disable Windows spreading. Any idea?
1147
NB: Nvidia has released an official fix; please see ,  and/or .  Upon waking up Ubuntu 16.04 from Suspend, the following graphical glitches appear around all windows, context menus, and similar:      This is currently known to affect the following NVIDIA cards running the proprietary drivers:  NVIDIA GeForce 610M, driver version 375.39, 340.102 NVIDIA GT 630M, driver version 375.39 NVIDIA GTX 650, driver version 375.39 NVIDIA GT 740M, driver version 378.13 NVIDIA GTX 745, unknown driver version NVIDIA GTX 850M, driver version 375.39, 378.13 NVIDIA GT 940M, driver version 375.39 NVIDIA GTX 950M, unknown driver version NVIDIA GTX 960M, driver version 378.13 NVIDIA GTX 970, driver version 375.39 NVIDIA GTX 970M, driver version 375.39 NVIDIA GTX 980 TI, unknown driver version NVIDIA GTX 1060, driver version 375.26, 375.39, 378.09 NVIDIA GTX 1070, driver version 378.09  The above above list has been sourced from reports from other users here on AU,  thread, and  thread. NB: This is be no means an exclusive list. It probably effects nearly all Nvidia cards.  Furthermore, this issue has been replicated on a clean install where the only change was a software update and the installation of the latest NVIDIA drivers.  What is going on, and how can it be resolved?
66961
I have been facing this issue from the last week after some update. Whenever my laptop wakes up from suspend state it just shows me a blank screen. Regardless of whatever I do(move my mouse, press keyboard buttons) it just refuses to wake up. I am forced to do a restart and lose all my unsaved files. Has this issue been reported for Ubuntu 12.04?  I am using a Lenovo X200 with Intel Mobile 4 Series Graphics Chipset. Please let me know if any body has found a fix for this.
114770
I have a problem where a one-pixel high white line is displayed through certain letters of text. Almost always only a single character type is affected at once, and only in one font size (though that size can change over time). Most of the time things are fine, but this happens several times a day. It happens frequently in Firefox, but system dialogs, menus, etc. can also be affected. It's been happening ever since I upgraded to 10.10. Only restarting seems to fix it.  Two examples (in the first, only the larger "r" is corrupted):     Any help would be appreciated, thanks.  Edit: I've since noticed that I can (sometimes) make the fonts appear correctly by zooming in/out all the way and returning to the default in Firefox (one or two steps, then going back, does nothing) seems to make the problem go away temporarily.  Edit 2: I figure it's worth noting that the solution below doesn't fully work for me any longer (I'm now using Ubuntu 11.10). It does significantly reduce the frequency of this problem occurring.  Edit 3: Still around in 12.04. The fix provided by Vanni works perfectly now for me, but apparently doesn't for some.  Edit 4: This seems to be an xorg problem, with Vanni's answer fixing it for many Intel video cards. I've had this occasionally happen with AMD graphics cards in 13.10 and 14.04, but very rarely (only two or three times).
64132
I'm getting vast amounts of these messages in my Console:  13/03/2015 16:02:20.924 WindowServer[250]: _CGXGLDisplayContextForDisplayDevice: No matching context for device (0x7fcfcaf18220) - disabling OpenGL   and WindowServer is consistently at around 16%. I'm using DisplayLink. Is there anything I can do about it?
112050
Q: I have two monitors with different scaling on the same window. Any ideas on how to fix this issue? I also have a minor issue with new windows or browser windows opening half off screen and I think it could be related by not sure.  Info: I have a Optiplex 990 with an NVidia GTX 750 Ti for CAD and modeling on Windows 10. I'm running two monitors, the first being a DellP2213 over DVI and the second being a Dell UP3214Q over Mini DP. Both monitors are set to native and I haven't made any changes to scaling or resolutions.  I've included  so you can see what I'm talking about, as well as two shots from the display settings.  The first image is a photo of the layout.   Next is the print screen of the layouts.   The other two pictures show the basic settings of the monitors.    If anyone needs more information, please let me know.  Edit: Tried updating drivers and removing the NVidia Control Panel settings. No dice.
71623
I have recently upgraded two PCs to Windows 10. Both computers do use "hibernate" extensively. Both are set up in a way so that keyboard, mouse and ethernet commands are not waking the PC.  Unfortunately, both PCs have startet to wake up in the night and stay awake for hours on end. This is totally annoying and costs a lot in terms of energy, so I'm investigating why this happens.  Powerconfig often fails to show any reason, but most often updates seem to be the culprit. Is there any way to force the PCs to stay shut down in the night? Unplugging is not really an option, since one of them is a laptop.
1223
I'm running a Laptop with Arch Linux, X.org and i3. Due to a broken LCD panel, I would like to disable/ignore the left ~228 Pixels of the screen until I have time to get it repaired.  So far, I've tried using a non-standard resolution and then adding an offset, but had no success. Is there any simple solution for this?
42194
Today I installed sound card drivers of my motherboard (Asus P6T SE), and now I have started hearing the things that are happening on my screen. When I scroll, or change windows, basically cause a redraw on screen, I hear noises kind of resembles each action. And I am not on drugs.  What causes this and how can I fix that?
107951
On ubuntu server, how can I avoid the screen being cleared just before the login screen pops?  I'm trying to read an error message on one of the services and I get this annoying clear screen and I cannot scroll up with shift-pageUp.
23493
For the last 1.5 years I've tended to put my laptop in sleep mode rather than turn it off. Recently I started to feel it's not as fast as it was when I bought it, even if I restore a fresh Windows 7 image (I made it 1 week after installing the system for the first time).  Maybe it's just an impression, I'm not sure...   Can it be a result of putting my laptop in sleep mode? What computer parts get worn down over time? Is there software to test if these parts are worn?
57526
I don't want Super + L (that is the windows key pressed with the L key) to lock my screen. I have disabled this in settings, but it still happens. How do I make this not happen?
25588
There is a tiny window that I am unable to identify or close. It is big enough for me to move but I can't seem to stretch it to make it bigger, I can't close it. It does not appear to be any of the items listed as Applications in the Task Manager.  Is there any sort of program that allows me to identify a process by clicking on the window of the application?  I really want to know what this is. If I log out it goes away but something I am doing is causing it to re-appear.  Any ideas how best to troubleshoot it?
32849
This all started happening after upgrading to 13.10, now I am running 14.04 and still have the same issue.  When I close the lid or I do sudo pm-suspend the laptop goes into suspend for 2-5 seconds and awakes by itself.  Same happens if I try to do hibernate.  I have a gut feeling that something is awaking/taking the cpu out of suspend mode but I cannot figure out what.  Any help troubleshooting this annoying issue?  Edit:   Thanks to @Fabian , I was able to figure out that it looks like the ethernet card is misbehaving and even after I set the card to not wake up on lan (either doing acpitool -W 3 or echo disabled &gt; /sys/bus/pci/devices/0000:00:19.0/power/wakeup or echo IGBE &gt; /proc/acpi/wakeup, the laptop keeps waking up and showing this when I do acpitool -w  Device  S-state   Status   Sysfs node --------------------------------------- 1. LID    S3    *enabled  2. SLPB   S3    *disabled 3. IGBE   S4    *enabled   pci:0000:00:19.0 4. EXP1   S4    *disabled  pci:0000:00:1c.0 5. EXP2   S4    *disabled  pci:0000:00:1c.1 6. EXP3   S4    *disabled 7. EXP4   S4    *disabled 8. EXP5   S4    *disabled  pci:0000:00:1c.4 9. EHC1   S3    *disabled  pci:0000:00:1d.0 10. EHC2      S3    *disabled  pci:0000:00:1a.0 11. HDEF      S4    *disabled  pci:0000:00:1b.0   Any idea how to proceed from there?  The network driver that IGBE uses is e1000e
109904
I have a strange problem. My icons seem to disappear randomly on my Windows 7. They were there a while back, now they ain't.  It happens often and quite randomly. Anyone know a fix?
62726
My windows 10 show garbage characters, I guess I didn't do anything special, but when I start my computer, it looks like this now. is there anything I can do right now?
6593
When I put my computer into sleep mode, it will wake up while I'm away from it. There's nothing near the computer that could move the mouse or accidentally press a button and I have no idea what might be causing it.  I tried checking what woke it, apparently LASTWAKE only tells me that it has been in sleep mode, not what woke it up.    I also couldn't find anything in my Power Options regarding Sleep that seems off. Poking around in the Event Viewer I notice the following:   The Power-Troubleshooter event at the top notes the following:     The system has returned from a low power state.      Sleep Time: ‎2012‎-‎10‎-‎27T11:31:53.408927000Z    Wake Time: ‎2012‎-‎10‎-‎27T12:25:51.887029300Z      Wake Source: Unknown   So does anyone have an idea to find out what might be causing it and how I can prevent my computer from randomly waking up?
82040
When screen brightness is low I get this dark spot in my screen. Is this something serious ?