Arch Linux

toki1990

Member

Registered: 2019-11-03

Posts: 17

Monitor standby problem. Monitor goes black and opening again.

When entering standby, first monitor goes black (but not in stanby i can see light source), secondly after 10-15 second monitor opening, thirdly monitor goes black again but system is locked.

Here is the report:

# xset q:

Keyboard Control:
  auto repeat:  on    key click percent:  0    LED mask:  00000002
  XKB indicators:
    00: Caps Lock:   off    01: Num Lock:    on     02: Scroll Lock: off
    03: Compose:     off    04: Kana:        off    05: Sleep:       off
    06: Suspend:     off    07: Mute:        off    08: Misc:        off
    09: Mail:        off    10: Charging:    off    11: Shift Lock:  off
    12: Group 2:     off    13: Mouse Keys:  off
  auto repeat delay:  500    repeat rate:  20
  auto repeating keys:  00ffffffdffffbbf
                        fadfffefffedffff
                        9fffffffffffffff
                        fff7ffffffffffff
  bell percent:  50    bell pitch:  400    bell duration:  100
Pointer Control:
  acceleration:  2/1    threshold:  4
Screen Saver:
  prefer blanking:  no    allow exposures:  no
  timeout:  600    cycle:  300
Colors:
  default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
Font Path:
  /usr/share/fonts/TTF,built-ins
DPMS (Energy Star):
  Standby: 660    Suspend: 0    Off: 720
  DPMS is Enabled
  Monitor is On

i tried xset dpms force off, xset dpms force standby, xset dpms force suspend. Doesnt work.

This problem doesnt exist over manjaro or ubuntu.

My gpu: Radeon rx 470. I'm using open source default driver.

Last edited by toki1990 (2019-11-03 22:31:43)

toki1990

Member

Registered: 2019-11-03

Posts: 17

Re: Monitor standby problem. Monitor goes black and opening again.

Solved. But i can wait for different solutions.

I'm added amdgpu.dc=0 to grub.cfg. Updated grub.

chrisdb

Member

From: Belgium

Registered: 2018-05-16

Posts: 155

Re: Monitor standby problem. Monitor goes black and opening again.

This problem doesnt exist over manjaro or ubuntu.

The latest Manjaro runs version 4.19 of the Linux kernel.

Maybe you can try and use the lts kernel with Arch and see if that works...

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Failure is success in progress.
A.E.

toki1990

Member

Registered: 2019-11-03

Posts: 17

Re: Monitor standby problem. Monitor goes black and opening again.

This problem doesnt exist over manjaro or ubuntu.

The latest Manjaro runs version 4.19 of the Linux kernel.

Maybe you can try and use the lts kernel with Arch and see if that works...

Thanks for reply.

I'm tried manjaro lastest version xfce 18.1.2. It's working over kernel 5.3.7 . Upgradable 5.3.8 now. What is difference what is trick i down know.

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,267

Re: Monitor standby problem. Monitor goes black and opening again.

Manjaro might either disable dc by default or use the radeon module, check "lsmod" and "systool -vm amdgpu"

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

toki1990

Member

Registered: 2019-11-03

Posts: 17

Re: Monitor standby problem. Monitor goes black and opening again.

Manjaro might either disable dc by default or use the radeon module, check "lsmod" and "systool -vm amdgpu"

Thanks for reply.

I tried command "systool -vm amdgpu | grep dc" over manjaro. Result "-1". I check this over internet its mean "1".

I checked amdgpu. Tried "dmesg |grep -i amdgpu" result same as arch.

Last edited by toki1990 (2019-11-05 14:40:06)

toki1990

Member

Registered: 2019-11-03

Posts: 17

Re: Monitor standby problem. Monitor goes black and opening again.

I tried last "linux-next-git" kernel from aur. I tried last "linux-amd-staging-drm-next-git" kernel from aur. Not solution.

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,267

Re: Monitor standby problem. Monitor goes black and opening again.

No., it means "automatic" - you could try to explicitly activate it on manjaro, though that's probably a pointless excercise unless you really want to know what's different.

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

toki1990

Member

Registered: 2019-11-03

Posts: 17

Re: Monitor standby problem. Monitor goes black and opening again.

No., it means "automatic" - you could try to explicitly activate it on manjaro, though that's probably a pointless excercise unless you really want to know what's different.

I set manjaro's grub.cfg. Added amdgpu.dc=1. Updated grub. Standby working.  What is difference. This is a mystery. 

Last edited by toki1990 (2019-11-05 17:54:41)