> I am on an Intel(R) Core(TM) i7-7500U CPU @ 2.70GHz running Linux > x86_64 (Slackware), with a custom-compiled 5.3.0-rc4 (.config > attached). > > I am using the Intel wifi adapter on this machine: > > 02:00.0 Network controller: Intel Corporation Device 24fb (rev 10) > > with the iwlwifi driver. I am attaching the output to 'lspci -vv -s > 02:00.0' as the file device-info. > > All 5.3.0-rc* versions I have tried (including rc4) cause multiple > dmesg iwlwifi-related errors (dmesg attached). Examples: > > iwlwifi 0000:02:00.0: Failed to get geographic profile info -5 > iwlwifi 0000:02:00.0: Microcode SW error detected. Restarting 0x82000000 > iwlwifi 0000:02:00.0: 0x00000038 | BAD_COMMAND > I have my logs filled with similar garbage throughout 5.3-rc*. Also since 5.3-rcsomething not only it WARNS in dmesg about firmware failure, but completely stops working after suspend/resume cycle. It looks like that: commit 4fd445a2c855bbcab81fbe06d110e78dbd974a5b Author: Haim Dreyfuss <haim.dreyfuss@xxxxxxxxx> Date: Thu May 2 11:45:02 2019 +0300 iwlwifi: mvm: Add log information about SAR status Inform users when SAR status is changing. Signed-off-by: Haim Dreyfuss <haim.dreyfuss@xxxxxxxxx> Signed-off-by: Luca Coelho <luciano.coelho@xxxxxxxxx> is the culprit. (manually) reverting it on top of 5.3-rc4 makes everything work again.