I'm posting more detail about the problem I have in hope to get some support.

When I lost the network, /var/log/syslog is always as follow :*
Jul *8 23:17:50 ikus060-laptop kernel: [ 7185.023899] iwlwifi 0000:03:00.0: Queue 11 stuck for 2000 ms.
Jul *8 23:17:50 ikus060-laptop kernel: [ 7185.023907] iwlwifi 0000:03:00.0: Current read_ptr 223 write_ptr 227Jul *8 23:17:50 ikus060-laptop kernel: [ 7185.023911] iwlwifi 0000:03:00.0: On demand firmware reload
Jul *8 23:17:50 ikus060-laptop kernel: [ 7185.458864] iwlwifi 0000:03:00.0: fail to flush all tx fifo queuesJul *8 23:17:50 ikus060-laptop kernel: [ 7185.458893] iwlwifi 0000:03:00.0: fw recovery, no hcmd send
Jul *8 23:17:50 ikus060-laptop kernel: [ 7185.458900] iwlwifi 0000:03:00.0: Error sending SENSITIVITY_CMD: enqueue_hcmd failed: -5Jul *8 23:17:50 ikus060-laptop kernel: [ 7185.459365] ieee80211 phy1: Hardware restart was requested
Jul *8 23:17:50 ikus060-laptop kernel: [ 7185.459432] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0SJul *8 23:17:50 ikus060-laptop kernel: [ 7185.459595] iwlwifi 0000:03:00.0: Radio type=0x1-0x3-0x1