Fails the gray or black screen login and crashes the system with the use

Hello I mounted a htpc with ryzen 3 220G vega, I chose this operating system, because I also tried Debian with a matt desktop and updated kernel in different ways and could not activate the sound, even with Ubuntu. Only with Ubuntu mate I got the sound to work immediately after installing the operating system, but I have problems with the boot (none in Debian with mate) and the same in Ubuntu. Sometimes it starts well and sometimes it does not, it remains blocked in the screen in gray or black. Then I go into recovery and the operating system reloads. It also freezes and blocks the operating system when opening or closing windows, or with simple acts that do not require much recourse to the CPU.
Do I have to add something in the parameters of the grub to start normally?, And what can I do so that it does not freeze. The RAM memory is Corsair Vengeance LPX - 8 GB high performance XMP 2.0 memory module (2 x 4 GB, DDR4, 3200 MHz, C16). The unbow hard drive M.2 NGFF 80 mm 120 GB. I have not manipulated ram memory on the base card. I appreciate any help you can give me. I paste here a hardinfo report and another log-in report.
Summary
Equipment
Processor AMD Ryzen 3 2200G with Radeon Vega Graphics
Memory 7126MB (2747MB used)
Type of computer PC Desktop
Operating system Ubuntu 18.04 LTS
Username marta (marta)
Date / Time Sun 27 May 2018 10:55:03 CEST
screen
Resolution 1920x1080 pixels
OpenGL llvmpipe Render (LLVM 6.0, 128 bits)
X11 Provider The X.Org Foundation
Audio devices
HDA-Intel Audio Adapter - HD-Audio Generic
HDA-Intel Audio Adapter - HD-Audio Generic

Start logs:
most important mistakes, I can not put it whole.

may 27 10:16:29 marta-desktop kernel: ACPI Error: [SMIC] Namespace lookup failure, AE_ALREADY_EXISTS (20170831/dswload-378)
may 27 10:16:29 marta-desktop kernel: ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog (20170831/psobject-252)
may 27 10:16:29 marta-desktop kernel: ACPI Exception: AE_ALREADY_EXISTS, (SSDT: AMD PT) while loading table (20170831/tbxfload-228)
may 27 10:16:29 marta-desktop kernel: ACPI Error: 1 table load failures, 7 successful (20170831/tbxfload-246)
may 27 10:16:29 marta-desktop kernel: ACPI Error: [PTOS] Namespace lookup failure, AE_NOT_FOUND (20170831/psargs-364)
may 27 10:16:29 marta-desktop kernel: No Local Variables are initialized for Method ["" ]
may 27 10:16:29 marta-desktop kernel: No Arguments are initialized for method ["" ]
may 27 10:16:29 marta-desktop kernel: ACPI Error: Method parse/execution failed , AE_NOT_FOUND (20170831/psparse-550)

may 27 10:16:29 marta-desktop kernel: Couldn’t get size: 0x800000000000000e

may 27 10:16:29 marta-desktop kernel: [drm:amdgpu_init [amdgpu]] ERROR VGACON disables amdgpu kernel modesetting.

may 27 10:17:00 marta-desktop kernel: [drm:amdgpu_init [amdgpu]] ERROR VGACON disables amdgpu kernel modesetting.

may 27 10:17:02 marta-desktop wpa_supplicant[1326]: dbus: wpa_dbus_get_object_properties: failed to get object properties: (none) none
may 27 10:17:02 marta-desktop wpa_supplicant[1326]: dbus: Failed to construct signal

may 27 10:17:03 marta-desktop lightdm[1891]: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file
may 27 10:17:03 marta-desktop lightdm[1891]: PAM adding faulty module: pam_kwallet.so
may 27 10:17:03 marta-desktop lightdm[1891]: PAM unable to dlopen(pam_kwallet5.so): /lib/security/pam_kwallet5.so: cannot open shared object file: No such fil
may 27 10:17:03 marta-desktop lightdm[1891]: PAM adding faulty module: pam_kwallet5.so

may 27 10:17:15 marta-desktop spice-vdagent[3127]: Cannot access vdagent virtio channel /dev/virtio-ports/com.redhat.spice.0

27 10:17:40 marta-desktop pulseaudio[3060]: [pulseaudio] bluez5-util.c: GetManagedObjects() failed: org.freedesktop.DBus.Error.NoReply: Did not receive a

may 27 11:32:08 marta-desktop kernel: usb usb2-port4: cannot disable (err = -32)

may 27 11:32:10 marta-desktop kernel: sd 11:0:0:0: [sdd] No Caching mode page found
may 27 11:32:10 marta-desktop kernel: sd 11:0:0:0: [sdd] Assuming drive cache: write through

thanks for your help

Activate HUD is not selected, the window is frame (adaptive compositor). I can not use the mouse or the keyboard stays locked.
here are two links to my X11 logs and one to log of the system.

https://www.dropbox.com/s/01304vxssnhywz0/Xorg.0.log%20old.odt?dl=0
https://www.dropbox.com/s/vayrh68a3n399ud/Xorg.0.log.odt?dl=0
https://www.dropbox.com/s/811efsamd1sgx6c/logs%20del%20sistema.odt?dl=0

Hello, Did you ever get this working? I have an AMD Ryzen 3 I can’t get to run stable. Asus 450 ITX motherboard.

Thanks
Andamo