I have exactly same problem as described in Bug 194141. I'm running Dell E5550 machine on kernel 5.3.0-rc3. Here is my dmesg error output: [ 1.628346] i801_smbus 0000:00:1f.3: PCI INT C: failed to register GSI [ 1.628349] i801_smbus 0000:00:1f.3: Failed to enable SMBus PCI device (-16) Here is failing SMBUS controller: 00:1f.3 SMBus [0c05]: Intel Corporation Wildcat Point-LP SMBus Controller [8086:9ca2] (rev 03) Subsystem: Dell Wildcat Point-LP SMBus Controller [1028:062c] Kernel modules: i2c_i801 Reason for creating new bug report is that I have tried newest kernel (5.3.0-rc3). I saw that commits mentioned as links in Bug report 194141 were already implemented in newest kernel, but SMBUS still fails to register PCI device. I have already tried stable kernels 4.19.36, 5.2.4 and 5.2.5. Problem is exactly the same in all of them.
Thanks for raising this but I think it is better to have the discussion in a single bug where all affected users can participate. Therefore I'll be closing this bug as duplicate. *** This bug has been marked as a duplicate of bug 194141 ***