Bluetooth mouse disconnects on Ubuntu

One of the most annoying problems I recently had with Linux notebooks with the “btusb” driver was the disconnect of bluetooth mouse devices. Devices like my Microsoft Bluetooth Mobile Mouse 3600, Xiaomi Mi Portable Mouse or other Bluetooth LE (low energy) mice have had lost their connection when my notebooks ran on battery and a reconnect was possible only after a restart of the Bluetooth stack.

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Upgrading an ASUS UX32LN notebook Wi-Fi to 802.11ac Wave 2

In my previous posting I mentioned Qualcomm Atheros QCA6174A-5 based half-size MiniPCI cards with 2×2 IPEX MHF4 antenna connectors as an 802.11ac wave2 upgrade for the ASUS UX31A. There are finally similar cards with 2×2 U.FL connectors available that make this upgrade an option for notebooks like my ASUS UX32LN or any newer ones.

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SparkLAN WPEQ-261ACN(BT) as a 802.11ac replacement for Intel 6235

Many of the 2012-2013 notebooks like ASUS UX31A, ASUS UX32VD, Dell XPS 13 or HP Elitebook 9470m have been shipped with Intel 6235 ANHMW. It is a 802.11a/b/g/n half-size minipci wireless card with IPEX MHF4 antenna connectors. Unfortunately, the industry has switched to U.FL connectors. Continue reading

Choosing a router for OpenWRT 14.07 Barrier Breaker

The OpenWRT project is about to release version 14.07 of their alternative home router firmware with many new features like native IPv6, support for NAND flash devices and a new web GUI. In this article I will provide a summary of the new features and a basic guide for choosing a supported device. As of today, considering features, price, performance and power consumption my recommended devices are the TL-WDR3500 and TL-WDR3600 routers from TP-LINK. These devices are for cable use only (no ADSL modem). Continue reading