I just got my C2 with Ubuntu Mate 18.04.2 LTS aarch64, Kernel: 3.16.68-41. Clean, then I did update & upgrade & reboot.
And it's slooooow, here's how slow it is:
https://youtu.be/i85aAKAVPlg
Not mentioning chrome + youtube videos

CPU governor is set to performance with 1.54 GHz speed.
And my glmark results seems slow as well /with SceneTerrain error/:
Code: Select all
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glmark2 2014.03+git20150611.fa71af2d
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OpenGL Information
GL_VENDOR: ARM
GL_RENDERER: Mali-450 MP
GL_VERSION: OpenGL ES 2.0
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[build] use-vbo=false: FPS: 107 FrameTime: 9.346 ms
[build] use-vbo=true: FPS: 153 FrameTime: 6.536 ms
[texture] texture-filter=nearest: FPS: 166 FrameTime: 6.024 ms
[texture] texture-filter=linear: FPS: 161 FrameTime: 6.211 ms
[texture] texture-filter=mipmap: FPS: 167 FrameTime: 5.988 ms
[shading] shading=gouraud: FPS: 137 FrameTime: 7.299 ms
[shading] shading=blinn-phong-inf: FPS: 142 FrameTime: 7.042 ms
[shading] shading=phong: FPS: 124 FrameTime: 8.065 ms
[shading] shading=cel: FPS: 123 FrameTime: 8.130 ms
[bump] bump-render=high-poly: FPS: 99 FrameTime: 10.101 ms
[bump] bump-render=normals: FPS: 163 FrameTime: 6.135 ms
[bump] bump-render=height: FPS: 161 FrameTime: 6.211 ms
[effect2d] kernel=0,1,0;1,-4,1;0,1,0;: FPS: 122 FrameTime: 8.197 ms
[effect2d] kernel=1,1,1,1,1;1,1,1,1,1;1,1,1,1,1;: FPS: 84 FrameTime: 11.905 ms
[pulsar] light=false:quads=5:texture=false: FPS: 166 FrameTime: 6.024 ms
[desktop] blur-radius=5:effect=blur:passes=1:separable=true:windows=4: FPS: 69 FrameTime: 14.493 ms
[desktop] effect=shadow:windows=4: FPS: 135 FrameTime: 7.407 ms
[buffer] columns=200:interleave=false:update-dispersion=0.9:update-fraction=0.5:update-method=map: FPS: 41 FrameTime: 24.390 ms
[buffer] columns=200:interleave=false:update-dispersion=0.9:update-fraction=0.5:update-method=subdata: FPS: 62 FrameTime: 16.129 ms
[buffer] columns=200:interleave=true:update-dispersion=0.9:update-fraction=0.5:update-method=map: FPS: 44 FrameTime: 22.727 ms
[ideas] speed=duration: FPS: 124 FrameTime: 8.065 ms
[jellyfish] <default>: FPS: 126 FrameTime: 7.937 ms
Error: SceneTerrain requires Vertex Texture Fetch support, but GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS is 0
[terrain] <default>: Unsupported
[shadow] <default>: FPS: 125 FrameTime: 8.000 ms
[refract] <default>: FPS: 39 FrameTime: 25.641 ms
[conditionals] fragment-steps=0:vertex-steps=0: FPS: 170 FrameTime: 5.882 ms
[conditionals] fragment-steps=5:vertex-steps=0: FPS: 137 FrameTime: 7.299 ms
[conditionals] fragment-steps=0:vertex-steps=5: FPS: 156 FrameTime: 6.410 ms
[function] fragment-complexity=low:fragment-steps=5: FPS: 156 FrameTime: 6.410 ms
[function] fragment-complexity=medium:fragment-steps=5: FPS: 129 FrameTime: 7.752 ms
[loop] fragment-loop=false:fragment-steps=5:vertex-steps=5: FPS: 151 FrameTime: 6.623 ms
[loop] fragment-steps=5:fragment-uniform=false:vertex-steps=5: FPS: 151 FrameTime: 6.623 ms
[loop] fragment-steps=5:fragment-uniform=true:vertex-steps=5: FPS: 147 FrameTime: 6.803 ms
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glmark2 Score: 126
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Any suggestions what should I do to make it work in more civil way?

Thank you