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I am trying to run Ubuntu 18.04 on a laptop with an AMD A12 processor and Radeon R7 graphics. I am having nothing but problems and am very discouraged with Ubuntu though I used 12.04 for years without such problems.

I have two problems that are maddening, and I will post them separately. The problems happen only on Gnome and Ubuntu on Xorg and do not happen on Wayland. However, I am told that it's best not to run Gnome on Wayland.

This problem is that the computer sometimes doesn't wake up from suspend. Well, I think it does wake up because the optical drive spins and the hard drive ticks away, but I cannot login because the lock screen is a hash of colors or a distorted background without a place to login. I cannot even ctrl- alt-F1 to get to a prompt. All input is frozen.

I am wondering if Xorg is configured correctly. I am running the Oilaf video driver which works well under Wayland so I don't know if there is a problem with Xorg and that driver.

I think I found the answer to this at long last. It seems to be working so far, but it's just been a few days. The solution I came across is to:

sudo gdm3 -reset 

and reboot.

(Note: After the gdm3 reset, it's going to come back to a login screen that won't let you login. Don't worry about it. Reboot and it will return to the normal login screen and everything will be fine.)

I am having a very similar issue on an HP Pavilion 17-ar050wm laptop. I've tried lots of different things -- using Oilaf/Ubuntu-X bleeding-edge drivers, switching to lightdm, running gdm3 -reset -- but the only thing that seems to make a difference is whether I entered sleep by pressing the power button or by closing the laptop lid. When I just closed the lid, the screen/keyboard doesn't come back up properly about 3/4 of the time, but when I pressed the button first, it comes back up 100% of the time (so far).

So for lack of a better solution, I'm just going to try to remember to press the power button every time before I close the lid. Hope this helps someone!

My machine had a similar issue after upgrading to Ubuntu 18.04. After closing the lid, the OS wouldn't wake up, but the backlight would come on. (Possibly unrelated: it appeared my keyboard was unresponsive as well, since toggling caps lock didn't light up the LED.)

I found a fix in my bios settings. There was a checkbox for enabling wake-up when the laptop lid is opened. It was unchecked, but checking it fixed the problem.

$ uname -r

4.15.0-21-lowlatency



$ lsb_release -r

Release:    18.04



$ lscpu

Architecture:        x86_64

Model name:          AMD PRO A10-8700B R6, 10 Compute Cores 4C+6G



$ dmidecode

BIOS Information

    Vendor: HP

    Version: N73 Ver. 01.17

    Release Date: 11/02/2016

In my situation:

$ uname -r

4.15.0-33-generic



$ lsb_release -r

Release: 18.04



$ lscpu

Architecture:        x86_64

CPU op-mode(s):      32-bit, 64-bit

Byte Order:          Little Endian

CPU(s):              4

On-line CPU(s) list: 0-3

Thread(s) per core:  1

Core(s) per socket:  4

Socket(s):           1

NUMA node(s):        1

Vendor ID:           GenuineIntel

CPU family:          6

Model:               55

Model name:          Intel(R) Pentium(R) CPU N3540  @ 2.16GHz

Stepping:            8

CPU MHz:             880.243

CPU max MHz:         2665,6001

CPU min MHz:         499,8000

BogoMIPS:            4331.60

Virtualization:      VT-x

L1d cache:           24K

L1i cache:           32K

L2 cache:            1024K

NUMA node0 CPU(s):   0-3

Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology tsc_reliable nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer rdrand lahf_lm 3dnowprefetch epb pti tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms dtherm ida arat



$ sudo dmidecode | grep BIOS -A2

BIOS Information

Vendor: Acer

Version: V1.10

BIOS Revision: 0.0

Firmware Revision: 1.9

Hardware - Aser E5-511-P6CS

Solution is remove from grub $vt_handoff string.

To do this - just edit /etc/grub.d/10_linux file.

Set $vt_handoff = "1" to $vt_handoff = "0"

I have similar issues. Tried disable switchable graphics card and modified vt_handoff. None of them worked.

Then I "accidentally" fixed the problem by setting the SATA mode to be "ACHI" (was "IDE" when I installed ubuntu) in the BIOS. And it fixed the problem!

(I tried to comment to the appropriate post, but this list said I needed a "50 reputation to comment". But it lets me add an answer at the bottom - don't understand.)

@stepan-illichevsky, I'm on Ubuntu Mate 18.04, on a dual AMD Opteron motherboard (Asus KCMA-D8). I finally got Windows 7 to wake from sleep by updating BIOS (allow PCIe to wake), but Ubuntu would still not wake up. Found you post and tried changing vt_handoff from "1" to "0" - it worked! Thanks! I saved another post about traversing some USB chain, but this was quick and easy.