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I've bought Dell Inspiron 5548 laptop and faced up with next problem - when I'm using build-in wireless card screen starts blinking, it's happens every time when I'm using it(watch online video, download file, etc). And it only happens when I'm using build-in wireless card, Ethernet and USB dongle acting normal. Also unfortunately it works normal on Windows 8 but I'm still want to use one of Linux distos so I'm asking for help here.

*-network description: Wireless interface product: QCA9565 / AR9565 Wireless Network Adapter vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: 01 serial: 4c:bb:58:6e:6e:58 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=3.16.0-59-generic firmware=N/A ip=192.168.1.42 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn resources: irq:19 memory:d2100000-d217ffff memory:d2180000-d218ffff

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I had the same type o problem in my MacBook 13' early 2015.

I was able to stop the blinking by changing the wi-fi channel, in my case to 2.412 GHz (Channel 1).

  • Unfortunately, I'm already using this frequency and my router don't support 5 GHz frequency. – Konstantin Azizov Jan 31 '16 at 8:53
  • Have you tried to change to another 2.4 GHz channel? – Mateus Zitelli Jan 31 '16 at 9:56

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