Black screen shows off suddenly after 2 - 4 hours
After 2 - 4 hours my laptops starts showing me a black screen when I click somewhere. This has happened many times, and it happens only when my laptop is awake for a long time and a lots of tabs are open. (Firefox and multiple terminals in diverse workspaces) I do suspend it for 5 or 10 minutes by closing its lid. This problem happens more when multiple terminals are open. Also fans of the laptop makes so much loud
Machine info:
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Acer Aspire 5742
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Intel Core i3-370M
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4 GB ram
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Intel HD graphics
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Triple boot (Ubuntu Mate 16.04, CentOS 7, Windows 7)
The time has reduced to one-half to one hour. It is getting worse, I can't do any work. Is it a hardware or software problem?
I posted it here too.
Also now it is getting worst and it shows me black screen after 15 or 20 minutes.I have found so many logs in /var/log which mentions time when black screen shows off,but they are too many i didn't understand them.I don't think that it my screen problem as when black screen shows off,The song in my headphone Also stops playing!!
edit 22 July
I am using Linux mint XFCE 18.2(which is in other words is Xubutnu) and I am not getting this problem.I am using Linux mint XFCE. since one month.Also I was not getting this problem in Ubuntu unity.Thus I think that this is not my hardware problem but is related to Ubuntu mate.
Solution 1:
I'd suspect an overheating issue, especially if it is getting worse over time. Your comment that the fans get loud indicate that either the bearings are wearing out or that they are PWM fans and are reacting to the high internal heat by speeding up. This does not sound like a kernel version or a RAM issue to me although high heat can certainly adversely effect performance and stability.
More windows open means more work for the CPU and perhaps GPU to do. And thus, more heat generated.
Could be a clogged filter, clogged air inlet, a dead fan and so on. Or that you are just running more processes than your laptop is capable of handling.
A quick test to validate this theory would be to take the laptop some place cool, such as outside.
Overheating to the point of shutting down every 2-4 hours will make it difficult to test for improvements. Failing every 30 minutes, not so difficult.
When in a suspended state, the inside of the laptop case will eventually cool down because not much will be running.
You can install psensor which will monitor temps and discovered fans. Alerts can be displayed based on thresholds that you specify. There are several very good threads on this site explaining how to do this.
https://help.ubuntu.com/community/SensorInstallHowto
Solution 2:
Start by installing newer kernel and Xorg versions:
sudo apt-get install --install-recommends linux-generic-hwe-16.04 xserver-xorg-hwe-16.04
After that, try installing the latest Mesa version:
sudo add-apt-repository ppa:paulo-miguel-dias/pkppa
sudo apt update
sudo apt upgrade
If you still have issues, it is probably a hardware problem (Acers=ugh. In the future, by a Dell or Toshiba) Try using Memtest86+ (one of the options in the Grub screen) and let the test run for a few hours.