Then press "Apply" to confirm the "Load Defaults" command.Īs far as I can tell, there is no specific setting or combination of settings in the BIOS which causes this issue. I suggest selecting "NO" for the SATA Operation change. When you choose this option, you will also be asked if you want to allow the SATA Operation to be changed. choosing the option of "Load Defaults" in the BIOS. My preliminary testing indicates that the solution may be as simple as. This issue seems to be the same as what is discussed here: In my troubleshooting I found this issue continues to happen despite removing the hard drive, cdrom drive, and despite switching from a low quality USB 2.0 thumb drive as the boot device to a high quality USB 3.0 thumb drive. I have experienced this issue on two E6520 laptops with i5 processors running the Linux Mint live image for installing Mint version 18 (booted off the USB port.) Both laptops running BIOS version A19, which is the latest version at this time. This is not a critical system to me but I thought I'd report the bug for all intents and purposes, and I'd rather not reinstall windows on it if it can be helped -) I attached the output of dmesg and the Xorg.0.log file.
I have performed a full hardware test of the laptop (via setup) only a couple of days ago, there was no issue. Until recently this laptop was running windows 7 64 pro without any problem. I noticed that the underside of the laptop is sometimes very hot when the display freezes, but it is not systematic, sometimes the freeze happens after the laptop had time to cool before booting and hasn't got hot yet. The mouse and screen seems slightly less responsive than usual a few seconds before the freeze so that I can "feel it coming".
The system is however still active and can be accessed externally through SSH.
and I can't access terminals at Ctrl+Alt+F1 etc.) It does not shut down gracefully when the power button is pressed. The mouse still moves but the system does not react to clicks or keypresses (not even Ctrl-Alt-Del etc. The display freezes at random (I had this 10 times today with completely different apps running).
This is a fresh install of Ubuntu 16.04LTS 64 on a Dell Latitude E6520 laptop with an Intel core i7-2720QM (4 core) CPU, 8GB RAM and an NVIDIA N12P-NS2 video controller.