Connectivity issues - Intel Ultimate N WiFi Link 5300

[fader]

Hi,

I have just starting using LL on my old Lenovo T400 laptop.
It connects fine to the AP and I'm able to surf and and stream media from smb shares. But when I do more heavier stuff eg FTP transferes the laptop loses the connection to my wifi. The speed goes down to 0 to 6 Mbit. I did find this in the logs.

journalctl -p 3 -xe

Code:

aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x0000011A | isr2
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x1443FCC3 | isr3
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x10800112 | isr4
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x00000E84 | isr_pref
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x00000094 | wait_event
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x00000000 | l2p_control
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x0000000F | l2p_duration
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x001050C6 | l2p_mhvalid
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x00000005 | l2p_addr_match
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x02121704 | lmpm_pmg_sel
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x00007888 | timestamp
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: 0x00000100 | flow_handler
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: Start IWL Event Log Dump: display last 20 entries
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884249:0x004a8719:1587
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884301:0x004a874d:1587
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884353:0x004a8780:1587
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884402:0x004a87b2:1587
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884454:0x004a87e6:1587
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884506:0x004a8819:1587
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884612:0x00000000:0263
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884629:0x00000000:0302
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884674:0x00000094:0303
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884832:0x0bac001c:0206
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884834:0x00000001:0204
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884836:0x01102100:0209
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884862:0x00000000:0210
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884878:0x00000000:0207
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884880:0x2b110000:0227
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884881:0xc1c08688:0228
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884885:0x004a8995:1586
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0004884953:0x004a89d9:1587
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0005084808:0x000000d7:0123
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: EVT_LOGT:0005084829:0x00000000:0125
aug 03 09:36:58 kalle-T400 kernel: iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 8 [0x07fd0001]
aug 03 09:40:00 kalle-T400 wpa_supplicant[1288]: dbus: wpa_dbus_get_object_properties: failed to get object properties: (org.>
aug 03 09:40:00 kalle-T400 wpa_supplicant[1288]: dbus: Failed to construct signal

lshw -C network

Code:

  *-network                 
       description: Ethernet interface
       product: 82567LM Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: enp0s25
       version: 03
       serial: 00:27:13:6b:77:f5
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.15.0-78-generic firmware=1.8-3 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:28 memory:fc000000-fc01ffff memory:fc025000-fc025fff ioport:1840(size=32)
  *-network
       description: Wireless interface
       product: Ultimate N WiFi Link 5300
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlp3s0
       version: 00
       serial: 00:21:6a:a9:8a:16
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.15.0-78-generic firmware=8.83.5.1 build 33692 5000-5.uco ip=192.168.82.12 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:31 memory:f4300000-f4301fff
  *-network DISABLED
       description: Ethernet interface
       physical id: a
       bus info: usb@2:4
       logical name: wwx028037ec0200
       serial: 02:80:37:ec:02:00
       capabilities: ethernet physical
       configuration: autonegotiation=off broadcast=yes driver=cdc_ether driverversion=5.15.0-78-generic duplex=half firmware=Mobile Broadband Network Device link=no multicast=yes port=twisted pair