Arch Linux

mamrezo

Member

Registered: 2020-07-24

Posts: 1

Xorg cpu load on NVIDIA driver

I have two Xorg configuration from Arch wiki and a script from a git repo from Manjaro comunity that switch between Intel and NVIDIA,
By Arch wiki one Xorg begin loading CPU from 25% to 40%, just hurting my notebook battery health.
By Manjaro ones, Xorg CPU load gone, but black screen on unlock screen.

CPU: i7-8750h
GPU: GeForce GTX 1050 Ti Mobile
Kernel: Linux mlpc 5.8.1-arch1-1 #1 SMP PREEMPT Wed, 12 Aug 2020 18:50:43 +0000 x86_64 GNU/Linux
Nvidia drivers:

extra/nvidia 450.66-16 [installed: 450.57-9]
extra/nvidia-settings 450.66-1 [installed: 450.57-1]
extra/nvidia-utils 450.66-1 [installed: 450.57-2]

kernel cmdline:

BOOT_IMAGE=/boot/vmlinuz-linux root=UUID=54b3dd90-9c15-428a-9339-0884a27d8b61 rw loglevel=3 splash resume=UUID=0a77214e-8de9-4e05-a84d-9c54d3a566f6

PCI devices:

❯ lspci
00:00.0 Host bridge: Intel Corporation 8th Gen Core Processor Host Bridge/DRAM Registers (rev 07)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 07)
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Mobile)
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:12.0 Signal processing controller: Intel Corporation Cannon Lake PCH Thermal Controller (rev 10)
00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10)
00:14.2 RAM memory: Intel Corporation Cannon Lake PCH Shared SRAM (rev 10)
00:15.0 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH Serial IO I2C Controller #0 (rev 10)
00:15.1 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH Serial IO I2C Controller #1 (rev 10)
00:16.0 Communication controller: Intel Corporation Cannon Lake PCH HECI Controller (rev 10)
00:17.0 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 10)
00:1d.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #14 (rev f0)
00:1d.6 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #15 (rev f0)
00:1e.0 Communication controller: Intel Corporation Cannon Lake PCH Serial IO UART Host Controller (rev 10)
00:1f.0 ISA bridge: Intel Corporation Device a30d (rev 10)
00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
00:1f.5 Serial bus controller [0c80]: Intel Corporation Cannon Lake PCH SPI Controller (rev 10)
01:00.0 VGA compatible controller: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio Controller (rev a1)
06:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8411B PCI Express Card Reader (rev 01)
06:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)
07:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)

❯ cat nouveau.conf
blacklist nouveau
options nouveau modeset=0

Config from Arch wiki:

❯ cat 10-nvidia-drm-outputclass.conf
#Section "OutputClass"
#    Identifier "intel"
#    MatchDriver "i915"
#    Driver "intel"
#EndSection

Section "OutputClass"
Identifier "nvidia"
MatchDriver "nvidia-drm"
Driver "nvidia"
Option "AllowEmptyInitialConfiguration"
#    Option "PrimaryGPU" "yes"
ModulePath "/usr/lib/nvidia/xorg"
ModulePath "/usr/lib/xorg/modules"
EndSection

Config from Manjaro comunity:

❯ cat 99-nvidia.conf
#/etc/X11/xorg.conf.d/99-nvidia.conf
#adjust BusID to match your nvidia GPU
#uncomment and edit the DPI option as needed
#to fix scaling issues.


Section "Module"
Load "modesetting"
EndSection

Section "Device"
Identifier "nvidia"
Driver  "nvidia"
BusID   "PCI:1:0:0"
Option  "DPI" "96 x 96"    #adjust this value as needed to fix scaling
Option  "AllowEmptyInitialConfiguration"
EndSection

Section "Extensions"
Option  "Composite" "Enable"
EndSection

With above configs HDMI port automatically detects(plug and unplug), and as I described the problem is Xorg CPU load on Arch config and black screen on unlock screen with Manjaro ones.

Note 1: HDMI port is on NVIDIA chip and wired to Intel, so I need NVIDIA.
Note 2: Im not switching frequently between NVIDIA and Intel, NVIDIA always in use.
Note 3: Due to Bumblebee cannot handle HDMI(plug and unplug) in this configuration(Note 1) I cant use it.
Note 4: Yes I remove other config when testing other one(99-nvidia.conf and 10-nvidia-drm-outputclass.conf).

Last edited by mamrezo (2020-08-30 14:09:47)