Third Party > Repairing and Upgrading Rockbox Capable Players
iPod Mini 2G Dramatic difference in battery life
speachy:
--- Quote from: iPodVT on April 15, 2024, 05:43:17 PM ---Does this mean that a Rockbox user would see a notable power consumption improvement when using a true CF card rather than a CF->SD adapter? (Meaning that a true CF card would be better than both the original HD and a CF->SD adapter?)
--- End quote ---
It is likely that the CF card has a higher active read/write current than the SD card would, but assuming it properly implements the (mandatory!) power management commands, then yes, it would show overall better power consumption because we'd be able to safely power it down.
--- Quote from: iPodVT on April 15, 2024, 05:43:17 PM ---Is the power consumption even more degraded if the CF->SD adapter contains a microSD in an SD->microSD adapter?
--- End quote ---
No, the SD->uSD adapter is completely passive, only adapting the physical form factor.
--- Quote from: iPodVT on April 15, 2024, 05:43:17 PM ---Are you able to specify/recommend which SD (and/or microSD) cards do better than others re Rockbox power consumption with a CF->SD adapter?
--- End quote ---
Unfortunately, no. Anectdotally battery life reports have varied very widely, and given how commoditized SD cards are (and widespread counterfeits) just because a "FooCo Class 99 64GB" adapter showed good results doesn't mean that the next person trying to get the same model will see consistent results.
--- Quote from: iPodVT on April 15, 2024, 05:43:17 PM ---Does Rockbox do better re power consumption when the mini contains one of the cheapo CF->SD adapters rather than the iFlash version?
--- End quote ---
AFAICT all of the PATA/CF->SD adapters are all built on the same FC1307 chipset, and perform identically (quality control notwithstanding; anectdotally the iFlash branded ones seem to have fewer problem reports...)
--- Quote from: denkly on April 15, 2024, 07:12:25 PM ---I have a question — this flaw is on ALL iPods with ATA (iPod Gen 3 A1040, iPod Gen 4 A1059/1099)? As i have iPod Gen 5 A1136, and it's playtime on Rockbox is very good. I'm getting 70 hours with 3000mah battery, thought i did not tested on original firmware. But, also, i have A1040 with CF-SD adapter, and Rockbox playtime is about the same 5-6 hours. Will do tests on A1040 on original firmware to confirm.
--- End quote ---
It would behave more or less the same across all <6th gen models, correct. The 6th gen's hardware is completely different and has a bespoke ATA controller+driver. I'd expect the same sort of problems, but due to the 128GB limitation of the 6th-gen Apple firmware folks prefer to mod the 5th gen instead.
iPodVT:
--- Quote from: speachy on April 15, 2024, 08:18:38 AM ---That said there is a flaw in the current code that results in power being left on even when it's safe to turn off -- I have a patch in gerrit that needs some wider testing:
https://gerrit.rockbox.org/r/c/rockbox/+/5647
--- End quote ---
I would be happy to test this if there is a fully built version I can install. I took a look at the page pointed to by the link above and it was not clear to me how I would incorporate the patch (which is something I've never done before). At this time I can't take on the project of installing a development environment and building my own versions of Rockbox from code.
My mini is a 2nd Gen, containing an iFlash CF->SD adapter which contains a 256GB Samsung Pro Plus microSD in an SD->microSD adapter. If I put a fresh battery in the mini, would it be necessary to first go through a few calibration cycles in order to get meaningful results from the power consumption testing? (Which begs the question: If a battery is disconnected and then reconnected, should it be recalibrated in order to get meaningful results from power consumption testing?)
speachy:
--- Quote from: iPodVT on April 16, 2024, 08:11:20 AM ---I would be happy to test this if there is a fully built version I can install.
--- End quote ---
Here are test builds for the ipod5g, ipod6g, and mini2g:
https://www.shaftnet.org/~pizza/rockbox-ipod5g-exp.zip
https://www.shaftnet.org/~pizza/rockbox-mini2g-exp.zip
https://www.shaftnet.org/~pizza/rockbox-ipod6g-exp.zip
For the purposes of this testing, the mini2g and ipod5g are interchangeable from a hardware/software perspective, but the ipod6g needs to be independently tested.
All three identify as "ab2af16c7c-240415" and are are git master plus three patches from gerrit (#5647, #5648, and #5650) as of this writing.
I have been updating those three files as I've made more changes, so any test results need to include the version string (taken from the "rockbox info" menu item).
There appear to be no regressions on the mini2g and ipod5g with their original hard drives. I need data corruption and power consumption results for (1) real CF cards, (2), SD adapters, and (3) SATA adapters. I'll also need to have the ssd detection sanity checked too; that's in the disk info debug page.
If there are any issues, I will also need (1) the "identify info" file (dumped via the debug menu) and (2) the contents of the disk info screens (ideally everything, but at minumum the power management and SSD lines)
I have a mini2g, but when taking it apart yesterday to swap in a CF card, I think I damaged the clickwheel ribbon cable, so I'm probably not going to get any useful testing done on it. I also have a ipod5g with dead audio out that I intend to take apart for a SATA SSD swap, but I don't know when I'll have the time (and desk space) to get that done.
iPodVT:
I have installed ab2af16c7c-240415 onto my 2nd Gen mini with CF->SD adapter. At the outset I'm seeing
SSD detected: yes
Power mgmt: unsupported
I don't know what you mean by "the ssd detection sanity"
Should I first see how long it will run with the Apple firmware as a benchmark, and then run this test version of Rockbox? I figure I should do the Apple version first in case any corruption results from running the Rockbox version.
[edit: addition] Or at this point are you only/mainly interested in stability/robustness, not necessarily power efficiency and how it compares to the Apple firmware's power efficiency?
speachy:
--- Quote from: iPodVT on April 16, 2024, 10:20:36 AM ---I have installed ab2af16c7c-240415 onto my 2nd Gen mini with CF->SD adapter. At the outset I'm seeing
SSD detected: yes
Power mgmt: unsupported
--- End quote ---
This is what I expected.
--- Quote from: iPodVT on April 16, 2024, 10:20:36 AM ---Should I first see how long it will run with the Apple firmware as a benchmark, and then run this test version of Rockbox? I figure I should do the Apple version first in case any corruption results from running the Rockbox version.
--- End quote ---
I'd expect battery life to not be so great with this, but the more important thing is to ensure there's no data corruption. copy files over to it, do a database update, generally abuse things. :)
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