Laptop fan always on

Hello guys,

I have a lenovo ideapad s340-api on which I installed manjaro xfce. I tested everything in windows and everything seemed to work perfectly.
Now that I am on manjaro, my laptop fans start spinning after a while and wont stop ever, even though my
temperatures are normal (35C idle/while browsing/discord)
Its pretty annoying to hear the fan all the time, even when not under load. Even at completely idle the fans spin all the time.
lm sensors does NOT show an RPM value for my cpu fan. Even after using sensors-detect it wont show up.
I also tried setting the power settings in the bios from “lenovo intelligent” or whatever to “quiet”. Does not seem to help in linux.
Anyone experiencing the same problem? I mean the laptop is brand new and I dont think it is a thermal issue…

Mine would do the same, but I found a Dell-specific utility to manage fan speeds.

Please post your system specs as outlined here:

Also see: Fan speed control - ArchWiki

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uhmm, I have the version with the ryzen 5 3500U cpu and no dedicated graphics card. I have noticed that when on battery, my laptop noise lessens and sometimes the fans completely stop. But now that my power plug is inserted, It starts spinning at a pretty fast speed (I can hear it loud and clearly) and the fans wont stop ever or ever decide to spin slower. I dont get it, it works flawlessly on windows tho. I wish I could somehow set a fancurve…

…that you still havent posted a basic output of system information.
You wont get very much help until you do that.

1 Like

Sorry, I have just now had the time to look at this problem again, here is my system information and dmesg errors:
inxi -Fazy:

  Kernel: 5.8.18-1-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.8-x86_64 
  root=UUID=43abd2f1-fb1c-486d-9dc0-638d4bd1e394 rw quiet apparmor=1 
  security=apparmor udev.log_priority=3 
  Desktop: Xfce 4.14.2 tk: Gtk 3.24.20 info: xfce4-panel, plank wm: xfwm4 
  dm: LightDM 1.30.0 Distro: Manjaro Linux 
  Type: Laptop System: LENOVO product: 81NB v: Lenovo IdeaPad S340-14API 
  serial: <filter> Chassis: type: 10 v: Lenovo IdeaPad S340-14API 
  serial: <filter> 
  Mobo: LENOVO model: LNVNB161216 v: SDK0J40700 WIN serial: <filter> 
  UEFI: LENOVO v: AMCN28WW(V1.11) date: 07/13/2020 
  ID-1: BAT1 charge: 50.2 Wh condition: 52.5/52.5 Wh (100%) volts: 12.6/11.3 
  model: 0x4C 0x47 0x43 0x00 0x32 0x30 0x 0x4C 0x31 0x38 0x4C 0x33 0x50 0x5250 
  type: Li-ion serial: <filter> status: Discharging cycles: 3 
  Info: Quad Core model: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx 
  bits: 64 type: MT MCP arch: Zen+ family: 17 (23) model-id: 18 (24) 
  stepping: 1 microcode: 8108102 L2 cache: 2048 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm 
  bogomips: 33550 
  Speed: 1222 MHz min/max: 1400/2100 MHz boost: enabled Core speeds (MHz): 
  1: 1221 2: 1223 3: 1236 4: 1292 5: 1222 6: 1240 7: 1222 8: 1222 
  Vulnerabilities: Type: itlb_multihit status: Not affected 
  Type: l1tf status: Not affected 
  Type: mds status: Not affected 
  Type: meltdown status: Not affected 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full AMD retpoline, IBPB: conditional, STIBP: 
  disabled, RSB filling 
  Type: srbds status: Not affected 
  Type: tsx_async_abort status: Not affected 
  Device-1: AMD Picasso vendor: Lenovo driver: amdgpu v: kernel 
  bus ID: 04:00.0 chip ID: 1002:15d8 
  Device-2: IMC Networks Integrated Camera type: USB driver: uvcvideo 
  bus ID: 1-4:2 chip ID: 13d3:56b2 
  Display: x11 server: X.Org 1.20.9 driver: amdgpu,ati unloaded: modesetting 
  alternate: fbdev,vesa display ID: :0.0 screens: 1 
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2") 
  s-diag: 582mm (22.9") 
  Monitor-1: eDP res: 1920x1080 hz: 60 dpi: 158 size: 309x174mm (12.2x6.9") 
  diag: 355mm (14") 
  OpenGL: renderer: AMD RAVEN (DRM 3.38.0 5.8.18-1-MANJARO LLVM 10.0.1) 
  v: 4.6 Mesa 20.2.1 direct render: Yes 
  Device-1: AMD Raven/Raven2/Fenghuang HDMI/DP Audio vendor: Lenovo 
  driver: snd_hda_intel v: kernel bus ID: 04:00.1 chip ID: 1002:15de 
  Device-2: AMD Raven/Raven2/FireFlight/Renoir Audio Processor vendor: Lenovo 
  driver: snd_rn_pci_acp3x v: kernel alternate: snd_pci_acp3x bus ID: 04:00.5 
  chip ID: 1022:15e2 
  Device-3: AMD Family 17h HD Audio vendor: Lenovo driver: snd_hda_intel 
  v: kernel bus ID: 04:00.6 chip ID: 1022:15e3 
  Sound Server: ALSA v: k5.8.18-1-MANJARO 
  Device-1: Realtek RTL8822BE 802.11a/b/g/n/ac WiFi adapter 
  vendor: Lenovo ThinkPad E595 driver: rtw_8822be v: N/A modules: rtw88_8822be 
  port: 2000 bus ID: 02:00.0 chip ID: 10ec:b822 
  IF: wlp2s0 state: up mac: <filter> 
  Local Storage: total: 476.94 GiB used: 10.18 GiB (2.1%) 
  SMART Message: Required tool smartctl not installed. Check --recommends 
  ID-1: /dev/nvme0n1 vendor: Lenovo model: UMIS RPJTJ512MEE1OWX 
  size: 476.94 GiB block size: physical: 512 B logical: 512 B speed: 31.6 Gb/s 
  lanes: 4 serial: <filter> rev: 2.0C0628 scheme: GPT 
  ID-1: / raw size: 476.64 GiB size: 468.16 GiB (98.22%) 
  used: 10.18 GiB (2.2%) fs: ext4 dev: /dev/nvme0n1p2 
  Alert: No Swap data was found. 
  System Temperatures: cpu: 43.0 C mobo: N/A gpu: amdgpu temp: 43.0 C 
  Fan Speeds (RPM): N/A 
  Processes: 229 Uptime: 12m Memory: 6.79 GiB used: 1.42 GiB (20.9%) 
  Init: systemd v: 246 Compilers: gcc: N/A Packages: pacman: 1122 lib: 350 
  flatpak: 0 Shell: Bash v: 5.0.18 running in: xfce4-terminal inxi: 3.1.08 

sudo dmesg -l emerg,alert,crit,err,warn gives me

[    0.411017] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP2.BCM5], AE_NOT_FOUND (20200528/dswload2-162)
[    0.411022] ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20200528/psobject-220)
[    0.791024] pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter.
[    0.791135] pci 0000:00:00.2: can't derive routing for PCI INT A
[    0.791136] pci 0000:00:00.2: PCI INT A: not connected
[    0.793592]  PPR NX GT IA GA PC GA_vAPIC
[    0.956511] i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
[    1.955298] snd_pci_acp3x 0000:04:00.5: Invalid ACP audio mode : 1
[    1.957880] i2c_hid i2c-SYNA3255:00: supply vdd not found, using dummy regulator
[    1.957901] i2c_hid i2c-SYNA3255:00: supply vddl not found, using dummy regulator
[    2.532713] acp_pdm_mach acp_pdm_mach.0: snd_soc_register_card(acp) failed: -517
[    3.241140] ------------[ cut here ]------------
[    3.241309] WARNING: CPU: 5 PID: 912 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2546 dc_link_set_backlight_level+0x8a/0xf0 [amdgpu]
[    3.241324] Modules linked in: btintel videodev bluetooth mc ecdh_generic ecc squashfs amdgpu loop snd_soc_dmic snd_acp3x_pdm_dma snd_acp3x_rn joydev mousedev snd_soc_core edac_mce_amd hid_multitouch snd_compress hid_generic kvm_amd snd_hda_codec_realtek snd_hda_codec_generic rtw88_8822be kvm rtw88_8822b ac97_bus ledtrig_audio snd_hda_codec_hdmi snd_pcm_dmaengine gpu_sched rtw88_pci rtw88_core i2c_algo_bit irqbypass snd_hda_intel nls_iso8859_1 crct10dif_pclmul ttm snd_intel_dspcfg crc32_pclmul nls_cp437 ghash_clmulni_intel aesni_intel vfat wmi_bmof fat mac80211 snd_hda_codec crypto_simd snd_hda_core cryptd glue_helper drm_kms_helper snd_hwdep rapl snd_pcm input_leds cec ccp cfg80211 rc_core sp5100_tco snd_rn_pci_acp3x snd_timer ideapad_laptop pcspkr k10temp syscopyarea sparse_keymap snd sysfillrect rfkill rng_core sysimgblt battery libarc4 fb_sys_fops snd_pci_acp3x i2c_piix4 soundcore ac wmi i2c_hid hid pinctrl_amd evdev mac_hid acpi_cpufreq nf_log_ipv6 ip6t_REJECT nf_reject_ipv6 xt_hl
[    3.241358]  ip6t_rt nf_log_ipv4 nf_log_common ipt_REJECT nf_reject_ipv4 xt_LOG xt_limit xt_addrtype xt_tcpudp xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c iptable_filter uinput drm msr crypto_user agpgart ip_tables x_tables ext4 crc32c_generic crc16 mbcache jbd2 serio_raw atkbd libps2 sdhci_pci cqhci sdhci xhci_pci xhci_hcd crc32c_intel mmc_core i8042 serio
[    3.241377] CPU: 5 PID: 912 Comm: systemd-backlig Not tainted 5.8.18-1-MANJARO #1
[    3.241380] Hardware name: LENOVO 81NB/LNVNB161216, BIOS AMCN28WW(V1.11) 07/13/2020
[    3.241505] RIP: 0010:dc_link_set_backlight_level+0x8a/0xf0 [amdgpu]
[    3.241509] Code: 30 03 00 00 31 c0 48 8d 96 c0 01 00 00 48 8b 0a 48 85 c9 74 06 48 3b 59 08 74 20 83 c0 01 48 81 c2 c8 04 00 00 83 f8 06 75 e3 <0f> 0b 45 31 e4 5b 44 89 e0 5d 41 5c 41 5d 41 5e c3 48 98 48 69 c0
[    3.241510] RSP: 0018:ffffb52001fa7df0 EFLAGS: 00010246
[    3.241512] RAX: 0000000000000006 RBX: ffff9faffaf8a000 RCX: 0000000000000000
[    3.241513] RDX: ffff9fafe4d21e70 RSI: ffff9fafe4d20000 RDI: 0000000000000000
[    3.241515] RBP: ffff9fafe4c50000 R08: 00000000000000ff R09: 000000000000000a
[    3.241515] R10: 000000000000000a R11: f000000000000000 R12: 000000000000ff01
[    3.241516] R13: 0000000000000000 R14: 000000000000ffff R15: ffff9faff30dee60
[    3.241518] FS:  00007f679be6b000(0000) GS:ffff9fb007b40000(0000) knlGS:0000000000000000
[    3.241519] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.241520] CR2: 000056060e088838 CR3: 00000001e37d4000 CR4: 00000000003406e0
[    3.241521] Call Trace:
[    3.241637]  amdgpu_dm_backlight_update_status+0xb4/0xc0 [amdgpu]
[    3.241649]  backlight_device_set_brightness+0x7e/0x130
[    3.241654]  brightness_store+0x63/0x80
[    3.241658]  kernfs_fop_write+0xce/0x1b0
[    3.241663]  vfs_write+0xc7/0x1f0
[    3.241669]  ksys_write+0x67/0xe0
[    3.241675]  do_syscall_64+0x44/0x70
[    3.241681]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    3.241684] RIP: 0033:0x7f679cc85f67
[    3.241686] Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
[    3.241687] RSP: 002b:00007ffd67a79448 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    3.241689] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f679cc85f67
[    3.241689] RDX: 0000000000000004 RSI: 00007ffd67a79530 RDI: 0000000000000004
[    3.241690] RBP: 00007ffd67a79530 R08: 0000000000000000 R09: 0000000000000000
[    3.241691] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[    3.241693] R13: 000056060e0723c0 R14: 0000000000000004 R15: 00007f679cd58720
[    3.241696] ---[ end trace 1bcb3100900555d0 ]---
[    7.915121] kauditd_printk_skb: 60 callbacks suppressed
[   23.506508] acp_rn_pdm_dma acp_rn_pdm_dma.0: ASoC: error at snd_soc_pcm_dai_trigger on acp_rn_pdm_dma.0: -110
[   31.905623] kauditd_printk_skb: 14 callbacks suppressed
[  172.180245] kauditd_printk_skb: 2 callbacks suppressed

there are alot of error messages, probably not all have to do with the fans. The wifi on this laptop is also not really the best thing in the world. But I figured I can buy a different wifi card and go on with my day if this is unfixable. But I cannot really change the fancontrol things idk. Hope you can help