How to Run Headless Linux on Amlogic S905 Devices Such as MINI MX or K1 Plus

A few week ago, I had been informed that Amlogic S905 U-boot and Linux source code was released, and one person use the code and other resources to load a minimal Ubuntu 14.04 image to his K1 Plus TV box and released the installation instructions and the image (Thanks olin!). I also have K1 Plus here, but since I’ve just finished reviewing Beelink MINI MX, I decided to use the latter instead. The instructions below boot Linux from the (micro) SD card, and can still boot Android if you remove the SD card. Modifying U-boot environment The instructions include opening the box, and connecting or soldering a USB to TTL debug board to access U-boot and change some parameters. But later once an image with network is working, you could also build and load fw_setenv and fw_saveenv, and do the same steps with an Android shell and without the need […]

H.264 & H.265 4K Video Playback on Amlogic S905 Android TV Box

I’ve almost completed my review of Videostrong K1 Plus Android box powered by Amlogic S905, and while there are many shortcomings, 4K video playback is actually pretty good with Android’s Video Player (Kodi is not really usable @ 4K). I connected the device to LG 42UB820T 4K UHD TV, and set video output to 2160p @ 60Hz, and went through several video samples: Beauty_3840x2160_120fps_420_8bit_HEVC_MP4.mp4 (H.265 @ 30 fps – No audio) – OK big_buck_bunny_4k_H264_30fps.mp4 (H.264 @ 30 fps – MPEG1/2 and AC3 audio) – OK big_buck_bunny_4k_H264_60fps.mp4 (H.264 @ 60 fps – MPEG1/2 and AC3 audio) – Video looks somewhat OK, but big audio delay or AV sync issue. BT.2020.20140602.ts (H.265 Rec.2020 compliant – AAC audio) – OK (First time I can play this video on any hardware). Fifa_WorldCup2014_Uruguay-Colombia_4K-x265.mp4 (H.265 @ 60 fps – AC3) – Video is very good, but no audio MHD_2013_2160p_ShowReel_R_9000f_24fps_RMN_QP23_10b.mkv (10-bit HEVC @ 24 fps – no […]

How to Update Firmware on Amlogic S905 TV Boxes

Videostrong has just sent me a new firmware for K1 Plus mini PC based on Amlogic S905 processor. The procedure is basically the same as for previous Amlogic devices, but I’ve still documented the step to follow an update. Please note that devices from decent brands should have OTA updates implemented, so it may not be needed, except for the cheapest devices, or in case of network issues. The firmware update procedure below can be done in any computer, including the Android TV box itself. The firmware is specific to K1 Plus, so if you have another TV box, you’ll need to change the download link to the firmware for your device. Download the firmware file (e.g. K1 Plus 2015-11-23.rar) Extract the compressed file to the root of a micro SD card, or on any other external storage. You should have a few files as shown above, including a zip […]

Amlogic S912 Processor Could Feature an ARM Mali-T830 GPU

Amlogic S912 launch has been delayed by a few months, and if we are to believe the data from GFXBench (test 1; test 2), the reason could be that they switched the design from a Mali-T7xx GPU to a more powerful Mali-T830 GPU. S912 processor is still based on four Cortex A53 core @ up to 2.0 GHz like in S905, but the GPU will be much more powerful. One person noticed these results and wrote an analysis and comparison (in Korean) against the Mali-860MP2 GPU found in Mediatek MT6755 SoC (Helio P10) SoC.  Offscreen  Manhattan 3.1  Manhattan  T-Rex  ALU  ALU2  Fillrate  Texturing  MT6755  4.8  7.2  17.2  6.0  1012  S912  4.4  7.0  16.3  34.7  5.3  1283  1000 So while Mali-860MP2 is faster for all listed benchmark the advantage is not that great. His analysis  compared benchmarks (read post for details) concludes that the GPU in S912 could be clocked at […]

Amlogic S805 vs S905 Benchmarks Comparison

After publishing a benchmark comparison between Amlogic S905 and Rockchip RK3368 yesterday, I was asked to do the same with Amlogic S805 and Amlogic S905. Since I already had the data, I just went ahead to write this post. Bear in mind that Amlogic S805 TV boxes run Android 4.4, while Amlogic S905 devices all feature Android 5.1. So while the table below should give a good estimate of the actual performance improvement between the two generation devices, Amlogic S905 performance will be amplified thanks to optimizations in Android 5.1, for instance the use of ART runtime instead of Dalvik. With that in mind here are the results comparing the results I got with Videostrong K1 Plus (Amlogic S905) and MXQ S85 (Amlogic S805) TV boxes. Amlogic S905 Amlogic S805 Ratio CPU Quad core Cortex A53 @ 2.02 GHz Quad core Cortex A5 @ 1.488 GHz GPU ARM Mali-450MP ARM […]

Amlogic S905 vs Rockchip RK3368 Benchmarks Comparison

The first Amlogic S905 TV boxes have started to ship,  and I received Videostrong K1 Plus a few days ago, but due to some issues with Google Play Store, I’ve decided to postpone the review. In the meantime, I’ve side-loaded popular benchmark apps including Antutu, Vellamo, and 3Dmarks to the device to compare it to its main 64-bit ARM competitor: Rockchip RK3368. I used benchmark results from Beelink i68 review and compared them to K1 Plus, both devices running Android 5.1. A ratio greater than 1 (green) mean S905 is better, while a ratio lower than 1 (red) means RK3368 fares better. Amlogic S905 Rockchip RK3368 Ratio CPU Quad core Cortex A53 @ 2.02 GHz* Octa core Cortex A53 @ 1.2GHz GPU ARM Mali-450MP PowerVR G6110 Antutu 5.x Overall 28,027 34,171 0.82 Multitask 4,260 4,041 1.05 Runtime 2,721 2,949 0.92 RAM Ops 1,960 2,346 0.84 RAM Speed 2,420 2,601 0.93 […]

Amlogic S905 Source Code Published – Linux, U-Boot, Mali-450 GPU and Other Drivers

Amlogic has an open linux website where they regurlarly release GPL source code, and with Amlogic S905 devices coming to market, they’ve released a few tarballs at the beginning of the month including Linux 3.14 source code, U-boot source code, and Mali-450MP GPU kernel source code (obviously not userspace), as well as some other drivers for WiFi, NAND flash, PMU, TVIN, etc… Let’s get to the download links: Linux 3.14.29 source code U-boot 2015.01 GPU drivers for ARM Mali-450MP Broadcom and Realtek Wifi drivers and firmware (November 4, 2015) can be found @ http://openlinux.amlogic.com:8000/download/ARM/wifi/. Other kernel modules (November 4, 2015) @ http://openlinux.amlogic.com:8000/download/ARM/modules/. I quickly tried to build the Linux source. If you’ve never build a 64-bit ARM kernel or app before, you’ll fist need to install the toolchain. I installed the one provided with Ubuntu 14.04:

Now extract the tarball and enter the source directory:

At first I […]

List of Amlogic S905 TV Boxes and Sticks

Rockchip RK3368 TV boxes looked promising at the end of the summer, but ended up being disappointing, not because of their expected lower performance compared to RK3288, but simply because they could not deliver on their main selling point: 4K H.265 / H.264 video playback, and the sheer number of issues with the first devices selling for nearly the same price as equivalent Rockchip RK3288 devices. Rockchip RK3368 will soon have a worthy competitor with Amlogic S905, which won’t deliver amazing benchmark scores, but looks promising for its 4K 10-bit HEVC video playback, HDMI 2.0 and HDCP 2.2, and historically Amlogic delivers better video playback than Rockchip. The first Amlogic S905 TV boxes should start shipping by the end of the month, and prices are starting very low, just over $40, thanks to competition between the many manufacturers launching devices based on the new Amlogic SoC. That’s why I’ve decided […]

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