On 12.12.2018 23:38, Mask The Truth God
You don't need to enable IOMMU if you don't intend to use it in VM.
Greetings, I have been
having problem with my hardware for quite a while now
and have been trying to figure it out on my own just by
reading forms and such and I have found a few forms that
helped but honestly most of them were complete idiots so
I decided to make my own and explain in depth the
problem. (excuse me if I make any grammar mistakes as I
Warning: I apologize for
this but I am going to go overboard with detail so If
you are not someone that can sit through and read very
long form then move on please.
I Will first start off with
my current specifications:
1 8 gb ddr3 ram stick
amd radeon r9 380 asus strix
amd fx 6300 6 core processor
500 watt evga Power supply
The Distrubutions I tried
installing that all had the same problems were: Debian,
Arch, Linux Mint, fedora, openSUES.
I am using Insigna 1217
Rev.A flat screen Television as my main display and it
is connected via High-Definition Multimedia Interface
cable. works fine on windows.
Ok now that that is settled
here is the story:
I first installed linux mint
on this machine and instantly when the machine booted up
( I use rufus to create the iso image also good to be
noted) The mouse and keyboard both did not work. TO fix
this problem I found that I needed to do the following
in the Bios:
set EHCI_HANDOFF to Enabled
set XHCI_HANDOFF TO ENABLED
set Iommu = Enabled
Then in Grub (applies to
every distro I used on this machine) :
After I applied these
initial fixes the booting speed picked up very much and
then the keyboard and mouse worked properly.
After this I then ran into
the more serious problems that I see lots of other
people have been having with this combo of graphics card
There was screen teaaring
inside discord, firefox, and opera but the desktop
enviornments (I tried both XFCE and KDE Plasma) did not
have any screen tearing problems. Only if I played game,
or used extrernal application (something that did not
come with the initial installation not the file manager
applications or things like those) Then there were
screen tearing problems. so you ask what did i do to try
to fix these problems:
- Tried both free and
non-free drivers (the non free were not really much use
i found the free to work slightly better as most people
know) using command
I could be mistaken, but those parameters are for other series of
AMD cards and should not be enabled explicitly for more recent R9
sudo mhwd -a pci nonfree
0300 -f (in arch)
- tried switching to compbiz
and compton compositors (XFCE)
- Edited sudo leafpad
Option "TearFree" "true"
- added the parameters
radeon.cik_support=0 amdgpu.cik_support=1 amdgpu.dpm=1
amdgpu.dc=1 to the GRUB_CMDLINE_LINUX line in
/etc/default/grub then ran update-grub and rebooted.
It's hard to know exactly what do you mean by "screen tearing", but
it sounds like your system doesn't use VGA properly or it wasn't
accelaration in firefox (for browser specific problems)
- edited the sudo leafpad
yet again to:
Option "DRI" "3"
Option "TearFree" "on"
Option "ColorTiling" "on"
Option "ColorTiling2D" "on"
and all of those options
STILL did nothing and the screen still still stuttered
and had tearing in browsers and discord. so this i am
quite confused on as videos play fine and there is no
tearing in them. Interestingly though, in firefox only,
they will not play in full HD (in arch specifically)
The other problem I was
having was (again in every distro i used) livestreams
would stutter and also streaming average not live videos
from youtube also would stutter (mostly just the sound
not the actual video) so to try to fix THIS problem i
tried the following:
changed the drivers from
free to nonfree and then back again
and this did nothing, still
the glitchy video playback in both opera and firefox.
I did go on amazon and look
up my motherboard model and read a bunch of their
comments and there were so many people saying that it
was a terrible mobo for linux support but then there
were some that were linux users who were quite happy. I
am stumped by these problems and have not been able to
fix them myself. sorry for the overly detailed form but
it must be done in this situation.
EDIT: I know this was
nothing to do with my internet as I have no problems
with any of my cables or router or anything of the sort
and the streaming works fine on windows also my video
card is properly secured in the mobo. I asked this same
question on a fourm and i was told That the only fix
might be to build a specific kernel meant for my board.
I feel like this would probably be very tedious and take
a long time so i would like to try to find an easier
solution before i know that would be the last resort.
I can't really help much because I solely use nvidia cards on Linux
(they have better driver support), but I can suggest you to look
into kernel messages generated during boot process and look for
errors or suspicious lines regarding VGA, amdgpu kernel module,
Kernel Mode Setting (KMS needs to be enabled), firmware loading.
$ journalctl -b
Look up information about what kernel module and Xorg server module
actually in use:
$ lspci -k | grep -5 VGA
$ glxinfo -B
It could be hard to rollback all "fixes" you've implemented already
and check everything sequentially.
Basically, you need to use "amdgpu" driver for your VGA, install
firmware package (firmware-amd-graphics) and install mesa to enable
video acceleration (mesa-va-drivers, mesa-va-drivers:i386).
There is an excellent guide available from Arch wiki, which could be
adapted for Debian.
Paste output from commands above, so others could help too, or see
if you've doing it right.
With kindest regards, Alexander.
⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system