solex
April 18, 2023, 3:34pm
1
Hi Folks new to this forum.
I recently started seeing screen flicker, I generally keep up-to-date when it comes to updating my system so it is not clear when the flickering started to occur. I have tried many of the i915 GRUB commands to no effect. In addition I tried different kernels and also cleaned out the fan in my nuc and made sure I had the latest BIOS update.
I had a similar problem with Fedora a few years ago and made the switch to Manjaro which solved the problem which leads me to believe that there may be a software issue.
Any help would be greatly appreciated.
here is the output from dmesg:
260750.868202] audit: type=1106 audit(1681767236.524:406): pid=143694 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='op=PAM:session_close grantors=pam_unix,pam_systemd acct="lightdm" exe="/usr/bin/lightdm" hostname=? addr=? terminal=:1 res=success'
[260750.868554] audit: type=1104 audit(1681767236.524:407): pid=143694 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='op=PAM:setcred grantors=pam_env,pam_permit acct="lightdm" exe="/usr/bin/lightdm" hostname=? addr=? terminal=:1 res=success'
[260757.068846] i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
and the output from lspci
260750.868202] audit: type=1106 audit(1681767236.524:406): pid=143694 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='op=PAM:session_close grantors=pam_unix,pam_systemd acct="lightdm" exe="/usr/bin/lightdm" hostname=? addr=? terminal=:1 res=success'
[260750.868554] audit: type=1104 audit(1681767236.524:407): pid=143694 uid=0 auid=4294967295 ses=4294967295 subj=unconfined msg='op=PAM:setcred grantors=pam_env,pam_permit acct="lightdm" exe="/usr/bin/lightdm" hostname=? addr=? terminal=:1 res=success'
[260757.068846] i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
can you return ,
inxi -Fza have you try ( if possible , depending on Arch / date intel) kernel 5.10 LTS ?
solex
April 18, 2023, 7:33pm
4
Stephane,
System:
Kernel: 6.2.10-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 12.2.1
parameters: BOOT_IMAGE=/boot/vmlinuz-6.2-x86_64
root=UUID=70b3bf7d-7a3b-4709-919f-88b40fdbf004 rw quiet splash apparmor=1
security=apparmor resume=UUID=93ade087-844c-450a-9645-ebd0daae78a9
udev.log_priority=3 i915.enable_psr=0
Desktop: Xfce v: 4.18.1 tk: Gtk v: 3.24.36 info: xfce4-panel wm: xfwm
v: 4.18.0 vt: 7 dm: LightDM v: 1.32.0 Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Desktop System: Intel product: NUC7i7BNH v: J31153-307
serial: <filter> Chassis: type: 3 v: 2 serial: N/A
Mobo: Intel model: NUC7i7BNB v: J31145-306 serial: <filter> UEFI: Intel
v: BNKBL357.86A.0089.2022.1110.1847 date: 11/10/2022
CPU:
Info: model: Intel Core i7-7567U socket: BGA1356 (U3E1) note: check bits: 64
type: MT MCP arch: Amber/Kaby Lake note: check gen: core 7 level: v3
note: check built: 2017 process: Intel 14nm family: 6 model-id: 0x8E (142)
stepping: 9 microcode: 0xF0
Topology: cpus: 1x cores: 2 tpc: 2 threads: 4 smt: enabled cache:
L1: 128 KiB desc: d-2x32 KiB; i-2x32 KiB L2: 512 KiB desc: 2x256 KiB
L3: 4 MiB desc: 1x4 MiB
Speed (MHz): avg: 1400 high: 3500 min/max: 400/4000 base/boost: 2200/2400
scaling: driver: intel_pstate governor: powersave volts: 0.9 V
ext-clock: 100 MHz cores: 1: 3500 2: 700 3: 700 4: 700 bogomips: 28009
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Vulnerabilities:
Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
vulnerable
Type: mds mitigation: Clear CPU buffers; SMT vulnerable
Type: meltdown mitigation: PTI
Type: mmio_stale_data mitigation: Clear CPU buffers; SMT vulnerable
Type: retbleed mitigation: IBRS
Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
prctl
Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
sanitization
Type: spectre_v2 mitigation: IBRS, IBPB: conditional, STIBP: conditional,
RSB filling, PBRSB-eIBRS: Not affected
Type: srbds mitigation: Microcode
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: Intel Iris Plus Graphics 650 driver: i915 v: kernel arch: Gen-9.5
process: Intel 14nm built: 2016-20 ports: active: DP-1 empty: DP-2,HDMI-A-1
bus-ID: 00:02.0 chip-ID: 8086:5927 class-ID: 0300
Display: x11 server: X.Org v: 21.1.8 compositor: xfwm v: 4.18.0 driver: X:
loaded: modesetting alternate: fbdev,vesa dri: iris gpu: i915
display-ID: :0.0 screens: 1
Screen-1: 0 s-res: 3840x2160 s-dpi: 96 s-size: 1016x571mm (40.00x22.48")
s-diag: 1165mm (45.88")
Monitor-1: DP-1 model: 324K built: 2016 res: 3840x2160 dpi: 111 gamma: 1.2
size: 880x510mm (34.65x20.08") diag: 707mm (27.8") ratio: 16:9 modes:
max: 3840x2160 min: 720x400
API: OpenGL Message: Unable to show GL data. Required tool glxinfo
missing.
Audio:
Device-1: Intel Sunrise Point-LP HD Audio driver: snd_hda_intel v: kernel
alternate: snd_soc_skl, snd_soc_avs, snd_sof_pci_intel_skl bus-ID: 1-4.2:6
bus-ID: 00:1f.3 chip-ID: 0582:0097 chip-ID: 8086:9d71 class-ID: 0102
class-ID: 0403
Device-2: Roland UA-1EX type: USB driver: snd-usb-audio
API: ALSA v: k6.2.10-1-MANJARO status: kernel-api with: aoss
type: oss-emulator tools: alsamixer,amixer
Server-1: JACK v: 1.9.22 status: off tools: N/A
Server-2: PipeWire v: 0.3.68 status: off tools: pw-cli
Server-3: PulseAudio v: 16.1 status: active (root, process)
with: pulseaudio-jack type: module tools: pacat,pactl,pavucontrol
Network:
Device-1: Intel Ethernet I219-V driver: e1000e v: kernel port: N/A
bus-ID: 00:1f.6 chip-ID: 8086:15d8 class-ID: 0200
IF: eno1 state: up speed: 1000 Mbps duplex: full mac: <filter>
Device-2: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel pcie:
gen: 1 speed: 2.5 GT/s lanes: 1 bus-ID: 3a:00.0 chip-ID: 8086:24fd
class-ID: 0280
IF: wlp58s0 state: down mac: <filter>
Bluetooth:
Device-1: Intel Bluetooth wireless interface type: USB driver: btusb v: 0.8
bus-ID: 1-8:5 chip-ID: 8087:0a2b class-ID: e001
Report: rfkill ID: hci0 rfk-id: 1 state: down bt-service: enabled,running
rfk-block: hardware: no software: yes address: see --recommends
Drives:
Local Storage: total: 577.55 GiB used: 61.16 GiB (10.6%)
SMART Message: Required tool smartctl not installed. Check --recommends
ID-1: /dev/sda maj-min: 8:0 vendor: SanDisk model: SDSSDA120G
size: 111.79 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
type: SSD serial: <filter> rev: 30RL scheme: GPT
ID-2: /dev/sdb maj-min: 8:16 vendor: Crucial model: CT500MX500SSD4
size: 465.76 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
type: SSD serial: <filter> rev: 023 scheme: GPT
Partition:
ID-1: / raw-size: 448.39 GiB size: 440.28 GiB (98.19%)
used: 61.16 GiB (13.9%) fs: ext4 block-size: 4096 B dev: /dev/sdb2
maj-min: 8:18
ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
used: 300 KiB (0.1%) fs: vfat block-size: 512 B dev: /dev/sdb1 maj-min: 8:17
Swap:
Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
ID-1: swap-1 type: partition size: 17.07 GiB used: 0 KiB (0.0%)
priority: -2 dev: /dev/sdb3 maj-min: 8:19
Sensors:
System Temperatures: cpu: 38.0 C pch: 38.5 C mobo: N/A
Fan Speeds (RPM): N/A
Info:
Processes: 213 Uptime: 3d 19h 53m wakeups: 0 Memory: 15.51 GiB
used: 4.96 GiB (32.0%) Init: systemd v: 252 default: graphical
tool: systemctl Compilers: gcc: 12.2.1 clang: 15.0.7 Packages: pm: pacman
pkgs: 1314 libs: 359 tools: pamac pm: flatpak pkgs: 0 Shell: Bash (su)
v: 5.1.16 running-in: xfce4-terminal inxi: 3.3.26
solex
April 18, 2023, 7:33pm
5
Hi megavolt, I did do a google search prior to posting and have tried all kernel parameters with no luck
solex
April 22, 2023, 12:06am
6
Ok it has been several days and there flickering is gone. Any idea what has been introduced in later kernels that would cause flickering?
Thank you for the suggestion.
I cannot believe that.
solex:
Uptime: 3d 19h 53m
Your pc is up for 3 days. You need to set a kernel parameter and reboot your computer. So obviously that can’t be true.
solex
April 22, 2023, 4:39pm
8
Megavolt, apologies if I was not precise and I did not mean for the output from the commands to be representative of everything I have tried overtime.
I have tried different kernel parameters over several months and from my research it seems that these parameters are hit or miss for some users:
i915.enable_psr=0
intel_idle.max_cstate=2
i915.edp_vswing=2
currently have “i915.enable_psr=0” in GRUB_CMDLINE_LINUX_DEFAULT
This is my home computer so I do not use it every day as I do my work laptop. If you have a suggestion of which kernel parameter combination would work please suggest.