[HN Gopher] Linux 6.1 on NanoPi R4S - On fixing SD-card support,...
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Linux 6.1 on NanoPi R4S - On fixing SD-card support, Heisenbugs and
Rabbit Holes
Author : kohlschuetter
Score : 140 points
Date : 2022-10-28 13:06 UTC (9 hours ago)
(HTM) web link (kohlschuetter.github.io)
(TXT) w3m dump (kohlschuetter.github.io)
| kjoedion wrote:
| nfriedly wrote:
| Some of the newer NanoPi models have 2.5G ethernet ports - I may
| end up replacing my current router with one of those if they
| eventually receive official OpenWRT support.
| outworlder wrote:
| Are they able to route packets at 2.5G speeds? They don't have
| dedicated routing or switching chips, so I'm wondering if the
| CPU can handle that.
| nfriedly wrote:
| I don't have either of these, but they claim the R5S can
| handle 2.1Gbps, and that the R6S can do 2.35Gbps. So, not
| quite 2.5, but close.
|
| NanoPi R5S: https://www.friendlyelec.com/index.php?route=prod
| uct/product...
|
| NanoPi R6S: https://www.friendlyelec.com/index.php?route=prod
| uct/product...
| simcop2387 wrote:
| Given the fixes here for the boot up sequence, I'd imagine that
| it'll happen when OpenWRT starts it's upgrades to the kernel
| for the next major release. I believe 6.1 is supposed to be the
| next LTS series which means that OpenWRT and other distros will
| pick it up as their next major kernel version to support. Even
| if they don't pick it, these patches sound like excellent
| candidates for back porting since they fix some key issues for
| some boards and look to be fairly isolated and so less likely
| to cause other bugs.
| uniqueuid wrote:
| Wow, if the name sounds familiar, it may be because you've read
| the author's seminal paper [1] on web page segmentation. Or used
| the boilerpipe library [2] to extract text yourself.
|
| Both are still great references. Thanks a lot!
|
| [1]
| https://scholar.google.com/citations?view_op=view_citation&h...
|
| [2] https://github.com/kohlschutter/boilerpipe
| rbanffy wrote:
| One of the most amazing things in Free Software is its
| multiplying effect. One person had a problem, dug into it,
| figured it out and got it fixed. The effects will ripple through
| time and space and improve the support of a lot of other devices
| now and in the future.
|
| This is FOSS at its best. Thank you, @kohlschuetter.
| squarefoot wrote:
| Agreed. That is one of the most overlooked benefits of using
| Open Source by users dealing only with proprietary software.
| There's a lot more than just being free as in beer.
| jacob019 wrote:
| The R4S is a great little device. Love the solid metal case, tiny
| size, and low power usage. I used one to route my gigabit
| Ethernet for several months. Compiled OpenWRT from source with
| LibreELEC's patches. No hardware problems for me--I did apply
| that voltage patch for the MicroSD. It handled the connection
| well, but couldn't quite push full gigabit PPPoE with VLAN. Gets
| close if you enable acceleration, but then no AQM. CenturyLink
| requires you to tunnel IPv6, so that on top of the PPPoE was a
| bit much for it, I could only IPv6 at about 300mbps. No eMMC, you
| have to provide a MicroSD, but OpenWRT doesn't write to the flash
| at all in normal operation, so that was fine.
|
| Now I have upgraded to the R5S. This thing has HDMI out, dual
| 2.5Gbps + 1x Gigabit Ethernet, and eMMC. It was a bit difficult
| to acquire, but I'm very happy with it. I can max out the Gigabit
| WAN now, with AQM which really helps. IPv6 reaches over 750mbps,
| and the R5S has cycles to spare, so I think that's the full
| speed. I can saturate the link over wireguard tunnels too.
|
| The R4S is up on eBay now.
| zokier wrote:
| Do you have good source for OpenWRT for R5S? I have one sitting
| on my desk, but trying to get nice clean version of OpenWRT has
| been taking more time than I was hoping.
| jacob019 wrote:
| I'm ashamed to admit that I was lazy this time, just used
| their FriendlyWRT build and then debloated. It's easy enough
| to disable all the packages, but a proper OpenWRT build would
| be preferable and you could be more confident that it is
| secure. You should be able to apply the patches from their
| github repo and build your own OpenWRT image. It was easy
| when I did it for the R4S (now I think it's supported
| upstream). The OpenWRT build system is very nice and easy.
| btgeekboy wrote:
| Yeah, I've built FriendlyWRT for the R5S. It's reasonably
| doable in an afternoon, depending on skill level.
| FriendlyWRT, or at least the sources for it, is just a few
| minor configuration tweaks for performance + default
| packages.
|
| http://wiki.friendlyelec.com/wiki/index.php/How_to_Build_Fr
| i...
| jacob019 wrote:
| Exactly, though I would rather restore the default
| OpenWRT package selection and branding. Hopefully the
| device support will land upstream soon.
| zokier wrote:
| > The OpenWRT build system is very nice and easy
|
| In general I agree, it is pretty nice. The thing I'm
| struggling with right now is getting kernel config right as
| I'm attempting to do a build with 6.0 but the configs from
| OpenWRT-5.15 do not work directly with that (or I'm doing
| something wrong...). The difficulty is that the kernel
| config seems to be done in layers in a way, assembling and
| the merging the final config from different sources and its
| not completely obvious where to poke to make it work. I
| don't think its insurmountable, but just takes some effort
| to figure out the build system etc. Especially as I'm
| trying to do things the "right" way instead of just trying
| to patch up something bootable.
| infogulch wrote:
| The R6S has a hardware AV1 decoder that can do 4k@60 over HDMI
| 2.1; might be a good media machine with Kodi...
|
| Would the R5S be a good candidate to install a pfSense or
| OPNSense firewall?
| bjt2n3904 wrote:
| This is an incredible article. If you've never tried to bring up
| a circuit board before with embedded Linux, this is exactly what
| it is like.
|
| And for the record, device tree has the most abominable syntax
| ever.
|
| status = "okay";
| megous wrote:
| Actually I like DT, especially the ability to name nodes and
| point to them from node properties, so I made similar config
| format for myself and happily use it to describe arbitrary
| graphs in configuration files.
|
| It's pretty powerful if the config doesn't have to be
| represented by a usual tree structure and there's a standard
| way to link between configuration objects.
| bjt2n3904 wrote:
| Yeah, I'd just be happier if it was a more sane format like
| JSON-LD or YAML.
| Havoc wrote:
| > The R4S isn't fully supported yet by a release-quality version
| of OpenWRT, but at least a so-called "snapshot" build (read:
| unstable) is available for tinkering
|
| This part isn't right...the latest release has r4s in it, not
| just the nightlies
|
| Pretty recent development though so not surprised author missed
| it
| _joel wrote:
| Ah cool, didn't even realise 6.x had been released.
| MrBuddyCasino wrote:
| OT, but that guy's SoundCloud doesn't disappoint if acoustic jaw
| harp techno is your thing:
| https://soundcloud.com/user-734845980/popular-tracks
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