Suspend problem with kernel 4.4

[GM]

When I install the linux kernel 4.4 (any of it) my laptop won't go to suspend when I close the lid or press the suspend (sleep button) this does not happen with kernel 4.2.0-27 (not sure of other 4.2 kernels). My laptop is a Lenovo G50-70 with a Radeon R5 M230. (linux Mint 17.3 Cinammon)

[Clement Lefebvre (clementlefebvre)]

Moving upstream.

Please provide dmesg output after pressing the sleep button.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1570899

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc4-wily/

[GM (tefaa8)]

Sorry for not replying those days.

Joseph I am not sure I can test this kernel because I am noob in doing anything with linux and this is also my working laptop so I can't mess it up.

After I put the computer to suspend, the screen closes but the system is still working (the fans never go to sleep). However it is not possible to wake the computer up (the computer sceen stays black no matter what you press). So I can't type a command in the terminal after waking the computer (technicaly it never went into suspension).

So please give me some information on which log files to send you after I reboot my computer from the power buttor after a failed suspension. I will switch kernels tonight again.

Thank you

[petersaints (petersaints)]

@GM
I have a different laptop (a SAMSUNG ATIV Book 8 / Model: NP870Z5E-X01PT) but I'm experiencing the exact same issues, as reported here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1570820

It's possible that the underlying problem is the same.

I'd like to mention that the 4.4.6, upon which the current Ubuntu 16.04 official kernel is based, works fine for me. If it also works fine for you, it may be a sign that the bug is not upstream but due to some extra patching done to the official kernels. You can get here: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.6-wily/

[GM (tefaa8)]

I have just tried the Linux Mint 18 Cinammon 64 bit beta version and the problem exists there too.

[Michal Bultrowicz (michalbultrowicz)]

Yesterday I got an automatic update of kernel to 4.4.0.24 - still can't suspend properly.

My system is Lenovo Z51 with Kubuntu (16.04, of course).
The problem disappears after switching to kernel 4.4.8.

[GM (tefaa8)]

The problem is fixed on kernel 4.6 and later versions. I am closing the bug.