Hi Martin, On Sat, Feb 22, 2020 at 12:13:07PM +0100, Martin Volf wrote: > Hello, > > hardware monitoring sensors NCT6796D on my Asus PRIME Z390M-PLUS > motherboard with Intel i7-9700 CPU don't work with 5.4 and newer linux > kernels, the driver nct6775 does not load. > > It is working OK in version 5.3. I have used almost all released stable > versions from 5.3.8 to 5.3.16; I didn't try older kernels. > > Even on new kernels the sensors-detect finds the sensors: > Found `Nuvoton NCT6796D Super IO Sensors' Success! > (address 0x290, driver `nct6775') > but "modprobe nct6775" says: > ERROR: could not insert 'nct6775': No such device > There is nothing interesting in dmesg. > > git bisect found out the first bad commit is > b84398d6d7f900805662b1619223fd644d862d7c, > i2c: i801: Use iTCO version 6 in Cannon Lake PCH and beyond > > Unfortunately I am not able to revert it in v5.4 to confirm it is really > the culprit. > > Is there a way to have working hwmon sensors on my system in newer linux > kernels? Well, it worked before, so I am quite sure it can be fixed. Thank you very much for your detailed regression report! Sadly, I am not familiar enough with those drivers, but you put the right people on CC, so I think you will get more feedback within the next days. I'll keep an eye on this, too. Happy hacking, Wolfram > > Thanks, > > Martin > > --8<-- > lspci > 00:00.0 Host bridge: Intel Corporation 8th Gen Core 8-core Desktop > Processor Host Bridge/DRAM Registers [Coffee Lake S] (rev 0d) > 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 > (Desktop 9 Series) (rev 02) > 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) > 00:16.0 Communication controller: Intel Corporation Cannon Lake PCH > HECI Controller (rev 10) > 00:17.0 SATA controller: Intel Corporation Cannon Lake PCH SATA AHCI > Controller (rev 10) > 00:1b.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root > Port #17 (rev f0) > 00:1c.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root > Port #1 (rev f0) > 00:1c.6 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root > Port #7 (rev f0) > 00:1d.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root > Port #9 (rev f0) > 00:1f.0 ISA bridge: Intel Corporation Z390 Chipset LPC/eSPI Controller (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) > 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (7) > I219-V (rev 10)
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