I'm having problems with the wifi of my Dell Latitude E7440. It often loses internect connection (it says it is still connected to the network) and then to reconnect I have to disconnect to the network and then reconnect (using the default widget in KDE -- Network Manager, maybe?).
Here are some of the errors I see:
$ journalctl -p err
[snitp]
Jan 29 17:04:04 e7440 kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
Jan 29 17:04:04 e7440 kernel: iwlwifi 0000:02:00.0: Error sending TXPATH_FLUSH: enqueue_hcmd failed: -5
Jan 29 17:04:04 e7440 kernel: iwlwifi 0000:02:00.0: Failed to send flush command (-5)
Jan 29 17:04:04 e7440 kernel: iwlwifi 0000:02:00.0: Failed to wake NIC for hcmd
Jan 29 17:04:04 e7440 kernel: iwlwifi 0000:02:00.0: Error sending REMOVE_STA: enqueue_hcmd failed: -5
Jan 29 17:04:04 e7440 kernel: iwlwifi 0000:02:00.0: Failed to remove station. Id=2
Jan 29 17:04:09 e7440 kernel: Bluetooth: hci0 command 0x0c03 tx timeout
Jan 29 17:04:17 e7440 kernel: Bluetooth: hci0 sending initial HCI reset command failed (-110)
Here is some information about the system:
$ inxi -v3
System: Host: e7440 Kernel: 4.9.1-towo.1-siduction-amd64 x86_64 (64 bit gcc: 6.3.0)
Desktop: KDE Plasma 5.8.4 (Qt 5.7.1) Distro: siduction 15.1.0 Paint It Black - kde - (201601162135)
Machine: Device: laptop System: Dell product: Latitude E7440 v: 00
Mobo: Dell model: 07F3F4 v: A00 BIOS: Dell v: A17 date: 12/01/2015
Battery BAT0: charge: 64.4 Wh 134.3% condition: 48.0/64.4 Wh (74%) model: SMP DELL 909H538 status: Full
CPU: Dual core Intel Core i7-4600U (-HT-MCP-) cache: 4096 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 10778
clock speeds: max: 3300 MHz 1: 2776 MHz 2: 2700 MHz 3: 2709 MHz 4: 2769 MHz
Graphics: Card: Intel Haswell-ULT Integrated Graphics Controller bus-ID: 00:02.0
Display Server: X.Org 1.19.0 driver: intel Resolution: 1920x1080@60.02hz
GLX Renderer: Mesa DRI Intel Haswell Mobile GLX Version: 3.0 Mesa 13.0.2 Direct Rendering: Yes
Network: Card-1: Intel Ethernet Connection I218-LM driver: e1000e v: 3.2.6-k port: f080 bus-ID: 00:19.0
IF: eno1 state: down mac: 34:e6:d7:19:d5:4d
Card-2: Intel Wireless 7260 driver: iwlwifi bus-ID: 02:00.0
IF: wlp2s0 state: up mac: 48:51:b7:67:5b:a1
Drives: HDD Total Size: 256.1GB (43.6% used)
ID-1: model: SAMSUNG_SSD_PM85
Info: Processes: 230 Uptime: 17 days Memory: 5209.8/7895.6MB Init: systemd runlevel: 5 Gcc sys: 6.3.0
Client: Shell (bash 4.4.51) inxi: 2.3.5
$ inxi -Nn
Network: Card-1: Intel Ethernet Connection I218-LM driver: e1000e
IF: eno1 state: down mac: 34:e6:d7:19:d5:4d
Card-2: Intel Wireless 7260 driver: iwlwifi
IF: wlp2s0 state: up mac: 48:51:b7:67:5b:a1
Any help would be greatly appreciated.