Batch Fir (Version 2) of Librem 5

So what does that mean? Can revised cases not change dimensions?

It could. But why? Channing alot would mean incompatibility with old parts and more R&D cost for what to gain? I would only see major changes in design coming i there are major issues with the v1 design coming up in 2020 which haven’t been foreseen now. The Librem13/15 case haven’t changed much either.

Only reason i can think of why there could be a major revision would be that they decided to have nfc and quick charge and know they have to drop metal casing in the future but it’s to late for v1 so they planing already for the change. Or the additional time needed for a slimmer design.

But i think this i over interpretation of this. I think it’s them just saying, for that version we might change things as there was enough time to find the areas which could be improved and we might have the time to address them. It’s just that no one is upset that there is a new improved version so close after the first.

It’s the transparency they give on the fact the L5 will be constantly improved and the later you by the more improvements you get.


Is it this series of GPU?


Vega shader cores? Is it actually an AMD graphics component?

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Here is what might be easily confirmed:

Vega 1× (?):

• i.MX 8M Quad (28nm HPC) = GC7000Lite 3D GPU (4 shaders), OpenGL ES 1.1, 2.0, 3.0, 3.1, Vulkan, OpenCL 1.2 – 267 million triangles/sec – 1.6 Giga pixel/sec – 32 GFLOPs 32-bit or 64 GFLOPs 16-bit

Vega-Lite (?):

• i.MX 8M Plus (14nm LPC FinFET) = GC7000UltraLite 3D GPU (2 shaders), OpenGL ES 2.0, 3.0, 3.1, Vulkan, OpenCL 1.2; GC520 (2D) – similar to Marvell Armada PXA1908 (28nm) + GC520 (2D)

• i.MX 8M Mini (14nm LPC FinFET) = GC NanoUltra 3D GPU (1 shader), OpenGL ES 2.0; GC328 (2D) – modern smartphone usable?

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Increase the battery capacity to 6k mAh in Librem 5 Fir/EvergreenCompat to fulfill the demand on true gnu-mobile-device.

All I care about for Fir is a newer next-generation CPU for better power efficiency. I hardly care for the battery itself since a larger capacity also means a tradeoff in larger weight and bulk.

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Well, it could either be same size, more capacity or smaller, same capacity.
But yes. Don’t add weight probably.


somewhat related to

nobody knows what it will look like, but maybe you have some wishes!

Obvious items on the outside:

  1. maybe thinner / lighter
  2. more moisture proof
  3. etc etc

No matter what kind of more advanced CPU is used in the next revision of the Librem 5, I don’t think it will matter much for power savings. The Librem 5’s high thirst for an abnormal number of electrons has almost nothing to do with the efficiency of the CPU. All other phones in the market use systems on chip SoC. All of the high integration micro-circuitry exists on the same silicon substrate on a SoC and are extremely small and packed close together on a nano scale. The power loss is almost imperceptible in that case. On the Librem 5, most of the communications and driver silicon chips are packaged and sold separately. Purism mounts them all on circuit boards inside of the phone. But you have literally inches of board-level traces to connect everything up. Inches might still seem small. But it might just as well be miles when compared to the nano-meters used to measure the insides of a packaged SoC. And pumping electrons down long board traces burns current, a lot of it. So a slightly better CPU in the next revision of the Librem 5 is only marginally better for power savings. It’ll probably be too small a difference to measure. The phone actually gets measurably hot on the outside of the case. A small increase of heat loss efficiency on the nano-meter scale means relatively nothing for extending battery life. But increasing the battery from 5Ah to 6Ah might help noticably.


Support ROSRUS GLONASSv2 for Librem 5 Fir.

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Please add: Dynamic-AMOLED monitor for Librem 5 Fir. TFT is obsolete and poor visibility ourdoor and poor power save in black color and etc. I not sure about the Heat Support in DAMOLED.
Make the Gnu-phone-Fir the best, of course under free software.


Why not: Librem 5 Beech a Gnu Risc-V mobile phone?


Wouldn’t that be a rather confusing name? i.e. by comparison with “Birch”

Regardless, if a RISC-V phone were even possible for Purism, it would be arguable that it would not be “Librem 5” and/or would not be “Librem 5 v2”. The point is that all indications are that Fir will be a drop-in replacement CPU with a smaller process from the same manufacturer, as far as this is possible. These are of course only my assumptions, and plans can change.

If Purism actually went RISC-V then they would need to make a decision as to the future of the ARM range. Do they abandon it? thereby causing difficulties for the stated support timeframes for the existing phones. Do they support both? thereby increasing support costs.

If they had both ranges then I would suggest keeping the “trees” for ARM and finding some other naming for RISC-V (but not “colours” since that is used for PureOS operating system code names).

While there is no shortage of topics in this forum that pontificate on RISC-V, you have to answer the fundamental question: What problem or limitation with the existing Librem 5 are you attempting to solve?

I understand the theoretical benefit of RISC-V but I think many customers would prioritise more storage and/or more RAM and/or quite a few other hardware considerations … ahead of changing the CPU architecture.

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Yeah a little.

First i was think to open new thread to prevent conflict to Fir batch as Freescale arm s.o.cs. based, but Fir v2 could be brave Risc-V as Risc-V it using same arm concepts like Low Energy CPUs but diferent arch.

Librem 5 a.t.m is an Autonomous Device, so Purism may easy support both. Risc-V is fine now and is time to start abandon Arm.

The main to resolve is the Closed ISA from ARM.

For me the highest priority for Librem 5 would be to find more free hardware powersave controllers and optimize the sofware for great stamina
ATM Risc-V SoCs does not supporting Suspend to RAM, but may some fancy advantages than arm socs.

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Economics: if there is not enough demand, the development work and endeavour will not be sustainable.

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More storage and RAM would be best. Although I am planning on migrating a 4GB chip for RAM and a 128GB EMMC to the motherboard at some point…

You’ll need to swap the motherboard PCB with that of a Liberty phone, as I hear that the PCB layout is different enough that an in-place chip upgrade is not possible.

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Is it even possible to buy the motherboard from Purism?

Not yet but maybe soon. Stay tuned.