How to find out the reason for disconnecting WIFI?

Question

linux

There is a laptop SONY VGN-SZ7RXN , Debian 10
Wifi module

lshw -class network        
  *-network                 
       описание: Беспроводной интерфейс
       продукт: PRO/Wireless 3945ABG [Golan] Network Connection
       производитель: Intel Corporation
       физический ID: 0
       сведения о шине: [email protected]:06:00.0
       логическое имя: wlp6s0
       версия: 02
       серийный №: 00:1f:3c:01:59:f4
       разрядность: 32 bits
       частота: 33MHz
       возможности: pm msi pciexpress bus_master cap_list ethernet physical wireless
       конфигурация: broadcast=yes driver=iwl3945 driverversion=5.10.88-xanmod1 firmware=15.32.2.9 ip=192.168.0.44 latency=0 link=yes multicast=yes wireless=IEEE 802.11

Communication falls off regularly, without a schedule. Maybe every 10 minutes, can keep it all day, but always after waking up from sleep mode. How to trace the cause, cure?

Answer 1

Run in terminal
dmesg -w
and leave it hanging like this.
When the Wi-Fi cuts again - look at what it says.
By the fact that he writes, you can then google.

Answer 2

watch the system logs in /var/log for several days.
most likely jambs in the driver.