I know that there are some threads to deal about this topic but neither has helped me. The problem is that the fan of the graphic-board permanently runs. I used ArchLinux on the same hardware without any problems but recently I changed to Ubuntu 16.04. Since then I have this problem with my noise fan!!
Here are some hardware informations :
**lshw -C system,display,cpu** linux-desktop description: Computer width: 64 bits capabilities: smbios-2.6 vsyscall32 **CPU** product: Intel(R) Core(TM) i3 CPU 550 @ 3.20GHz vendor: Intel Corp. physical id: 1 bus info: cpu@0 size: 1467MHz capacity: 3200MHz width: 64 bits capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 popcnt lahf_lm tpr_shadow vnmi flexpriority ept vpid dtherm arat cpufreq **Graphic** description: VGA compatible controller product: GF108 [GeForce GT 630] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nouveau latency=0 resources: irq:34 memory:fa000000-faffffff memory:d8000000-dfffffff memory:d6000000-d7ffffff ioport:dc00(size=128) memory:fbe80000-fbefffff **cat /etc/modules** coretemp **dmidecode** noticed that ACPI is supported! My fan has a connector with four pins (pwa capable). **hddtemp** is installed. **Graphic** 01:00.0 VGA compatible controller : NVIDIA Corporation GF108 [GeForce GT 630] [10de:0f00] (rev a1) (prog-if 00 [VGA controller]) Subsystem: ZOTAC International (MCO) Ltd. GF108 [GeForce GT 630] [19da:6199] Flags: bus master, fast devsel, latency 0, IRQ 34 Memory at fa000000 (32-bit, non-prefetchable) [size=16M] Memory at d8000000 (64-bit, prefetchable) [size=128M] Memory at d6000000 (64-bit, prefetchable) [size=32M] I/O ports at dc00 [size=128] Expansion ROM at fbe80000 [disabled] [size=512K] Capabilities: Kernel driver in use: nouveau Kernel modules: nvidiafb, nouveau 01:00.1 Audio device : NVIDIA Corporation GF108 High Definition Audio Controller [10de:0bea] (rev a1) Handle 0x0000, DMI type 0, 24 bytes **BIOS Information** Vendor: American Megatrends Inc. Version: A7708MLN.105 Release Date: 09/21/2010 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 2048 kB Characteristics: ISA is supported PCI is supported PNP is supported APM is supported BIOS is upgradeable BIOS shadowing is allowed ESCD support is available Boot from CD is supported Selectable boot is supported BIOS ROM is socketed EDD is supported 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 kB floppy services are supported (int 13h) 3.5"/2.88 MB floppy services are supported (int 13h) Print screen service is supported (int 5h) 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) Printer services are supported (int 17h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported LS-120 boot is supported ATAPI Zip drive boot is supported BIOS boot specification is supported Targeted content distribution is supported BIOS Revision: 8.15 Handle 0x0001, DMI type 1, 27 bytes **System Information** Manufacturer: MEDIONPC Product Name: MS-7708 Version: 1.2 Serial Number: UUID: 00000000-0000-0000-0000-6C626D8F9A68 Wake-up Type: Power Switch SKU Number: To Be Filled By O.E.M. Family: To Be Filled By O.E.M.
Thanks for your help.