Devuan 2.0 on Odroid XU4

From the “Well that right thar is your problem…” department.

Here’s a screen shot (cropped) of the gparted display of an Armbian XU4 runnable system and the just re-flashed Devuan 2.0 (doesn’t boot) for the XU4. See the difference?

This is Armbian and it works. In particular, note the first 16 MB ‘grey area’ byes. That’s where Odroid has you put their signed boot loader as a binary blob.

gparted screen for Armbian XU4 works

gparted screen for Armbian XU4 uSD image that works

Here’s the Devuan image that doesn’t work:

Devuan 2.0 for the XU4 doesn't work

Devuan 2.0 for the XU4 doesn’t work

So….

Where’s the boot loader?

This is the bit that makes the Odroids “different”. That grey blob at the front. Hardkernel have directions on their web site for how to put that there ‘on your own’. It is basically a dd of some block size / count, then you dd the rest onto the image starting after that block.

I already know the Devuan 2.0 userland works on the XU4 as I got it to boot using an entirely different kernel (but blew it on the DTB device tree bundle and it didn’t see my keyboard or mouse). So, OK, now I ‘have clue”.

Their full image is more like The Usual boot on other systems with /boot in a FAT partition and the userland in ext4. Somebody just didn’t make the XU4 image in the “odd Hardkernel way” and did it like everyone else…

So I need to find the directions at Hardkernel and “roll my own” installing the boot loader in the grey bits, making the ext file system where it belongs, and loading the tarball Devuan 2.0 into it. In Theory…

So “some assembly required” but at least now I know what to assemble… and what to leave alone.

I think this is the “recipe”, but I might just try a dd from a working earlier version…

https://wiki.odroid.com/odroid-xu4/software/building_u-boot_mainline

Seems to me that “dd bs=1M count=16 if=/SD/Armbian of=/dev/sdx” ought to work… maybe.

So guess what I’m doing “for a while” ? 9-)

IF I have the time, I might actually figure out how to report this as a bug:

https://bugs.devuan.org/Reporting.html

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About E.M.Smith

A technical managerial sort interested in things from Stonehenge to computer science. My present "hot buttons' are the mythology of Climate Change and ancient metrology; but things change...
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12 Responses to Devuan 2.0 on Odroid XU4

  1. gallopingcamel says:

    I read these comments withe great interest but seldom have clue how to apply the wit and wisdom.

  2. E.M.Smith says:

    @G.C.:

    Obscure tech stuff is only useful to someone who has the same needs and context. Like putting down the recipe for rattlesnake pie only matters to someone with s supply of rattlesnakes who wants a meat pie…

    I often do these just as my notebook to a future me. Fairly often I find myself thinking “How did I do that mount a file like a disk thing?” and searching for the posting I did. Also, often, like this one, I’m posting a problem and speculation and the answer only comes latter in a comment, from me or others.

    Mostly it just lets folks know what I’m doing and see that it often isn’t either quick or obvious even to an experienced hand.. So not to worry if you get stuck for a while too, just keep whacking at it…like I had to do. Basically, amusement and encouragement by example.

    FWIW, the Armbuan boot section with devuan userland would not boot as a uSD. But when I swapped back to the original Armbian to boot it, and left the hybrid uSD in thd hub, the sucker booted thd hub dongle and I was in Devuan. Not sure why, but I think it was booting by UUID and the cloned boot area had the same UUID.. I’m trying it all again, but with a cloned bootloader area from an Ubuntu instead. IIRC they put explicit bootargs in the boot.ini or boot.cmd and I might get more options.

    Knowing I need to make that 16mB boot loader area is nice, but I still am a bit clueless on how to make the right one… This is that “very hard to work with boot process” from Odroid that folks talk about… made deliberately “secure” and obscure for “security” that isn’t needed on a lab board…

  3. E.M.Smith says:

    Well, it looks like umpteenth time is the charm!

    I now have a working Devuan 2.0 on the Odroid XU4. Hooray!

    How?

    Roughly, the Ubuntu from Hardkernel has a different boot layout. No grey area either and with separate boot and root partitions, boot being FAT.

    I installed a big (7 GB or so) Ubuntu, booted it up once so it could do any partion resize and prove up the kernel and boot process, shut down and rebooted on Armbian (any os ought to do) , mounted the 2nd partition from the uSD on /SD/ext, then went in and deleted everything.

    At this point it has a first partion that’s FAT and boots. Then I did a tar xvf Devuan.tar.

    Swapped back to that uSD and it booted.

    I’ve done the update upgrade and now it is installing LXDE. In a while I will be posting from it (right now is the tablet..) with more specifics.

  4. E.M.Smith says:

    Well that’s a bummer… on reboot it complains of missing firmware and enters maintenance mode. Bypass that, I get the nice GUI Login screen, but again kb and mouse not working.

    udevd [427]: could not open moddep file ‘/lib/modules/4.14.141_169/modules.dep.bin’
    s5p-mfc 11000000.codec: Direct firmware load for s5p-mfc-v8.fw failed with error -2
    s5p_mfc_load_firmware:73: Firmware not present in /lib/firmware nor compiled in the kernel

    So looks like some kernel modules I need to fish out of the Ubuntu image to do the Xwindows thing w/ kb & mouse… so a bit more to do…

    In maint mode, poking around, it has /lib/modules/4.14.48 so a different kernel build.

    UPDATE: well, mounted the Ubuntu .img file as a disk mount and just copied all of lib/modules over. Now I’m past that, but it is complaining about firmware, so one more iteration:

    Direct firmware load for s5p-mfc-v8fw failed with error -2
    Not present in /lib/firmware

  5. E.M.Smith says:

    What a difference in the firmware directories!

    On the Devuan image:

    root@ArmbianUX4:/SD/ext/lib/firmware# ls
    av7110         cis     isci         usbdux_firmware.bin      usbduxsigma_firmware.bin
    carl9170-1.fw  dsp56k  keyspan_pda  usbduxfast_firmware.bin
    

    vs on the Ubuntu image:

    root@ArmbianUX4:/mnt/lib/firmware# ls
    1a98-INTEL-EDK2-2-tplg.bin   iwlwifi-3160-7.ucode               myri10ge_rss_eth_z8e.dat
    3com                         iwlwifi-3160-8.ucode               myri10ge_rss_ethp_big_z8e.dat
    NPE-B                        iwlwifi-3160-9.ucode               myri10ge_rss_ethp_z8e.dat
    NPE-C                        iwlwifi-3168-21.ucode              netronome
    README                       iwlwifi-3168-22.ucode              nvidia
    RTL8192E                     iwlwifi-3168-27.ucode              ositech
    WHENCE.ubuntu                iwlwifi-3168-29.ucode              phanfw.bin
    a300_pfp.fw                  iwlwifi-3945-2.ucode               qat_895xcc.bin
    a300_pm4.fw                  iwlwifi-4965-2.ucode               qat_895xcc_mmp.bin
    acenic                       iwlwifi-5000-5.ucode               qat_c3xxx.bin
    adaptec                      iwlwifi-5150-2.ucode               qat_c3xxx_mmp.bin
    advansys                     iwlwifi-6000-4.ucode               qat_c62x.bin
    agere_ap_fw.bin              iwlwifi-6000g2a-5.ucode            qat_c62x_mmp.bin
    agere_sta_fw.bin             iwlwifi-6000g2a-6.ucode            qat_mmp.bin
    amdgpu                       iwlwifi-6000g2b-6.ucode            qca
    ar3k                         iwlwifi-6050-5.ucode               qcom
    ar5523.bin                   iwlwifi-7260-10.ucode              qed
    as102_data1_st.hex           iwlwifi-7260-12.ucode              ql2100_fw.bin
    as102_data2_st.hex           iwlwifi-7260-13.ucode              ql2200_fw.bin
    asihpi                       iwlwifi-7260-16.ucode              ql2300_fw.bin
    ath10k                       iwlwifi-7260-17.ucode              ql2322_fw.bin
    ath3k-1.fw                   iwlwifi-7260-7.ucode               ql2400_fw.bin
    ath6k                        iwlwifi-7260-8.ucode               ql2500_fw.bin
    ath9k_htc                    iwlwifi-7260-9.ucode               qlogic
    atmel                        iwlwifi-7265-10.ucode              r128
    atmel_at76c504_2958.bin      iwlwifi-7265-12.ucode              r8a779x_usb3_v1.dlmem
    atmel_at76c504a_2958.bin     iwlwifi-7265-13.ucode              r8a779x_usb3_v2.dlmem
    atmsar11.fw                  iwlwifi-7265-16.ucode              r8a779x_usb3_v3.dlmem
    atusb                        iwlwifi-7265-17.ucode              radeon
    av7110                       iwlwifi-7265-8.ucode               regulatory.db
    bnx2                         iwlwifi-7265-9.ucode               regulatory.db.p7s
    bnx2x                        iwlwifi-7265D-10.ucode             rockchip
    brcm                         iwlwifi-7265D-12.ucode             rp2.fw
    carl9170-1.fw                iwlwifi-7265D-13.ucode             rsi
    carl9170fw                   iwlwifi-7265D-16.ucode             rsi_91x.fw
    cavium                       iwlwifi-7265D-17.ucode             rt2561.bin
    cbfw-3.2.1.1.bin             iwlwifi-7265D-21.ucode             rt2561s.bin
    cbfw-3.2.3.0.bin             iwlwifi-7265D-22.ucode             rt2661.bin
    cbfw-3.2.5.1.bin             iwlwifi-7265D-27.ucode             rt2860.bin
    cis                          iwlwifi-7265D-29.ucode             rt2870.bin
    configure                    iwlwifi-8000C-13.ucode             rt3070.bin
    cpia2                        iwlwifi-8000C-16.ucode             rt3090.bin
    ct2fw-3.2.1.1.bin            iwlwifi-8000C-21.ucode             rt3290.bin
    ct2fw-3.2.3.0.bin            iwlwifi-8000C-22.ucode             rt73.bin
    ct2fw-3.2.5.1.bin            iwlwifi-8000C-27.ucode             rtl_bt
    ctefx.bin                    iwlwifi-8000C-31.ucode             rtl_nic
    ctfw-3.2.1.1.bin             iwlwifi-8000C-34.ucode             rtlwifi
    ctfw-3.2.3.0.bin             iwlwifi-8000C-36.ucode             rtw88
    ctfw-3.2.5.1.bin             iwlwifi-8265-21.ucode              s2250.fw
    ctspeq.bin                   iwlwifi-8265-22.ucode              s2250_loader.fw
    cxgb3                        iwlwifi-8265-27.ucode              s5p-mfc-v6-v2.fw
    cxgb4                        iwlwifi-8265-31.ucode              s5p-mfc-v6.fw
    dsp56k                       iwlwifi-8265-34.ucode              s5p-mfc-v7.fw
    dvb-fe-xc4000-1.4.1.fw       iwlwifi-8265-36.ucode              s5p-mfc-v8.fw
    dvb-fe-xc5000-1.6.114.fw     iwlwifi-9000-pu-b0-jf-b0-33.ucode  s5p-mfc.fw
    dvb-fe-xc5000c-4.1.30.7.fw   iwlwifi-9000-pu-b0-jf-b0-34.ucode  sb16
    dvb-usb-dib0700-1.20.fw      iwlwifi-9000-pu-b0-jf-b0-38.ucode  scripts
    dvb-usb-it9135-01.fw         iwlwifi-9000-pu-b0-jf-b0-41.ucode  sdd_sagrad_1091_1098.bin
    dvb-usb-it9135-02.fw         iwlwifi-9000-pu-b0-jf-b0-43.ucode  slicoss
    dvb-usb-terratec-h5-drxk.fw  iwlwifi-9260-th-b0-jf-b0-33.ucode  sun
    e100                         iwlwifi-9260-th-b0-jf-b0-34.ucode  tehuti
    ea                           iwlwifi-9260-th-b0-jf-b0-38.ucode  ti-connectivity
    edgeport                     iwlwifi-9260-th-b0-jf-b0-41.ucode  ti-keystone
    emi26                        iwlwifi-9260-th-b0-jf-b0-43.ucode  ti_3410.fw
    emi62                        iwlwifi-Qu-b0-hr-b0-48.ucode       ti_5052.fw
    ene-ub6250                   iwlwifi-Qu-b0-jf-b0-48.ucode       tigon
    ess                          iwlwifi-Qu-c0-hr-b0-48.ucode       tlg2300_firmware.bin
    f2255usb.bin                 iwlwifi-Qu-c0-jf-b0-48.ucode       ttusb-budget
    go7007                       iwlwifi-QuZ-a0-hr-b0-48.ucode      ueagle-atm
    hfi1_dc8051.fw               iwlwifi-QuZ-a0-jf-b0-48.ucode      usbdux
    hfi1_fabric.fw               iwlwifi-cc-a0-46.ucode             usbdux_firmware.bin
    hfi1_pcie.fw                 kaweth                             usbduxfast_firmware.bin
    hfi1_sbus.fw                 keyspan                            usbduxsigma_firmware.bin
    hp                           keyspan_pda                        v4l-cx231xx-avcore-01.fw
    htc_7010.fw                  korg                               v4l-cx23418-apu.fw
    htc_9271.fw                  lbtf_usb.bin                       v4l-cx23418-cpu.fw
    i2400m-fw-usb-1.4.sbcf       lgs8g75.fw                         v4l-cx23418-dig.fw
    i2400m-fw-usb-1.5.sbcf       libertas                           v4l-cx2341x-dec.fw
    i6050-fw-usb-1.5.sbcf        liquidio                           v4l-cx2341x-enc.fw
    i915                         matrox                             v4l-cx2341x-init.mpg
    imx                          mediatek                           v4l-cx23885-avcore-01.fw
    intel                        mellanox                           v4l-cx25840.fw
    ipw2100-1.3-i.fw             moxa                               v4l-pvrusb2-24xxx-01.fw
    ipw2100-1.3-p.fw             mrvl                               v4l-pvrusb2-29xxx-01.fw
    ipw2100-1.3.fw               mt7601u.bin                        vicam
    ipw2200-bss.fw               mt7650.bin                         vntwusb.fw
    ipw2200-ibss.fw              mt7662.bin                         vpu_d.bin
    ipw2200-sniffer.fw           mt7662_rom_patch.bin               vpu_p.bin
    isci                         mts_cdma.fw                        vxge
    iwlwifi-100-5.ucode          mts_edge.fw                        whiteheat.fw
    iwlwifi-1000-5.ucode         mts_gsm.fw                         whiteheat_loader.fw
    iwlwifi-105-6.ucode          mts_mt9234mu.fw                    wil6210.brd
    iwlwifi-135-6.ucode          mts_mt9234zba.fw                   wil6210.fw
    iwlwifi-2000-6.ucode         mwl8k                              wsm_22.bin
    iwlwifi-2030-6.ucode         mwlwifi                            yam
    iwlwifi-3160-10.ucode        myri10ge_eth_big_z8e.dat           yamaha
    iwlwifi-3160-12.ucode        myri10ge_eth_z8e.dat               zd1201-ap.fw
    iwlwifi-3160-13.ucode        myri10ge_ethp_big_z8e.dat          zd1201.fw
    iwlwifi-3160-16.ucode        myri10ge_ethp_z8e.dat              zd1211
    iwlwifi-3160-17.ucode        myri10ge_rss_eth_big_z8e.dat
    root@ArmbianUX4:/mnt/lib/firmware# 
    

    I need to check that the Ubuntu stuff doesn’t stomp on the Devuan entries, then copy it all over, but man that’s a lot of stuff. I get the impression Ubuntu is tossing in firmware for just about any device you might plug in…

    Copied over with:

    root@ArmbianUX4:/SD/ext/lib/firmware# (cd /mnt/lib/firmware/; tar cf - .) | tar xf - 
    

    after moving /SD/ext/lib/firmware to Devuan_firmware, then doing a mkdir firmware… All the stuff in Devuan_firmware looked to exist in the Ubuntu firmware directory, so I decided to just set it aside in case f release level conflicts / dependencies…. but have it still available just in case and for comparison later.

  6. E.M.Smith says:

    OK , last post of the session:

    I still get dumped into maint mode w/ ctl-D to continue. If I continue, I now have working KB & mouse, can login, and stuff looks good. Htop works. BUT, after installing FireFox and Chromium, both have failure to launch / crash issues.

    So: Good news is the strategy works! Bad news is I’m in kernel dependency hell…

    Believe it or not, this is great improvement.

    I can either look to back level the Ubuntu kernel, or just copy the one ftom the Devuan (or other install) over as long as it is the right release level.

    Basically, we now now how to get it to boot, so it is either stuff in the matching kernel, or if that kernel is broken, do a make kernel. But as it is pushing 3 AM that’s for after a nap…

    With luck I can A/B the As Shipped Devuan build with this one and figure out what is broken in their build iso too.

  7. E.M.Smith says:

    OK, so another day, another WT?

    I swapped to the Devuan distributed kernel and DTB for exynos… and booted… and launched FireFox and Chromium … and it acted exactly the same.

    ot@ArmbianUX4:/SD/ms# ls -l
    total 25268
    -rwxr-xr-x 1 root root 63484 Sep 29 22:31 UBUNTU_exynos5422-odroidxu4.dtb
    -rwxr-xr-x 1 root root 5689408 Sep 29 22:31 UBUNTU_zImage
    -rwxr-xr-x 1 root root 9654 Sep 29 22:02 boot.ini
    -rwxr-xr-x 1 root root 753 Aug 20 2017 boot.ini.default
    -rwxr-xr-x 1 root root 56387 Sep 29 22:31 exynos5422-odroidhc1.dtb
    -rwxr-xr-x 1 root root 62462 Sep 29 22:31 exynos5422-odroidxu3-lite.dtb
    -rwxr-xr-x 1 root root 63517 Sep 29 22:31 exynos5422-odroidxu3.dtb
    -rwxr-xr-x 1 root root 63628 Sep 29 22:31 exynos5422-odroidxu4-kvm.dtb
    -rwxr-xr-x 1 root root 54968 Nov 8 00:01 exynos5422-odroidxu4.dtb
    -rwxr-xr-x 1 root root 12385555 Sep 29 22:31 uInitrd
    -rwxr-xr-x 1 root root 7412864 Nov 8 00:00 zImage

    Here you can see where I set aside the two Ubuntu versions (zImage and the dtb file that matched in name the one from Devuan – the others ought not to matter and are likely compiled into the Devuan kernel which is why it is larger and does not need them as dtb loads)

    So the good news is that this likely narrows down the reason for the failure to boot to NOT being the kernel or dtb. That just leaves the initial ram disk uInitrd, and the actual bits of boot code. Devuan has a boot.cmd and boot.scr, not a boot.ini file. So something different in the boot…

    root@ArmbianUX4:/SD/ext/Devuan_boot# ls -l
    total 7304
    -rw-r–r– 1 root root 322 Jun 5 2018 boot.cmd
    -rw-r–r– 1 root root 394 Jun 5 2018 boot.scr
    -rw-r–r– 1 root root 54968 Jun 5 2018 exynos5422-odroidxu4.dtb
    -rwxr-xr-x 1 root root 7412864 Jun 5 2018 zImage

    This further implies that it is unlikely the failure of the browsers is due to kernel dependency issues or device tree bundles (dtb). So what then?

    At this point I need a bit of a think. I’ve pretty much cut back the stuff used here from Ubuntu. I did have a few bits of holdovers in firmware and modules, so maybe there?

    It is likely easier to just archive a copy of this, burn a new Ubuntu Boot, and then try again without the Ubuntu firmare / modules / kernel /zImage / uInitrd. Just the boot bit and the boot.ini…

    It seems to me the only potential points of failure for the browsers at this point are the firmware / modules swapped (if any have effect) or the build is just broken for the browsers.

    But enough for now. After a second cuppa’ I’ll try just backing out the Ubuntu modules / firmware on this image, then resort to the more drastic “do over only use the Ubuntu boot and nothing else”…

    At that point it will either work, or I’m out of possibles to try and will just wait for a new release from Devuan (and use some other SBC as my daily driver. I was using the R.Pi Devuan for a while in there and it is still pretty nice. A bit slow on loading some web pages, but OK…)

    Now, where’s that kettle…

  8. E.M.Smith says:

    Backing out the firmware didn’t fix the pausing in the boot for “Ctl-D to continue” but re-introduce a “not found” message. Also didn’t fix browser failures.

    My conclusion at this point is that the Devuan boot is what is broken (since I’m using their kernel, dtb, firmware, etc. but not their boot and it DOES now boot) so “for the future” that’s where I’ll go look. It is also pretty clear that Userland does work, but also that their is some Dependency Hell issue in trying to graft it onto a very different Ubuntu release level.

    This implies I either need to learn how to “Roll my own” Devuan (best) or find a better matching host boot to graft onto (easier but more risk of failure, which see above…)

    So, for now, I’m swapped back to the Rock64 running Slackware. I’ll putter more on XU4 Devuan “at some future time” but this goes back to low priority. I may start with the Devuan install .img version and just swap the boot bits (on the assumption that’s the minimum possible change to make it boot; and that they likely did test a browser launch in that code so it ought to work).

    I’ve not given up on Devuan on the XU4. I fully expect some future update will be done right and I won’t have to fix it. Unfortunately, that might be a year away. So for now I’m likely to just backlevel it to the 1.0 I was running before (and either accept no updates / installs OR figure out how to use the archived repository) OR run it on straight Armbian with SystemD (BOOOO! Hiisssss) which isn’t my favorite idea.

    But for now, I’m going back to the Slackware platforms to “get some work done” and will be finding out more about installing packages on them. I’ve got the basics down, but need to learn the source “Slackbuilds” bit (since it looks like Chromium is a Slackbuild)

    Would it be more efficient to just pick one platform / OS and focus on it pushing harder? Only if you already KNOW just which one is preferred… If you semi-randomly picked the one with great issues on a given hardware platform, you can spin for months (years…) on it. As I have a bunch of orthogonal SBCs, the odds one of them would be “a Pill” on a Single Size For All becomes large. Thus my present strategy of “push some on several places and see what moves furthest fastest on a given SBC”. So far, that’s Slackware on systems where Devuan doesn’t “go”.

    But “We’ll see”…

  9. Somewhat Reticent says:

    Why the nearly-an-OS browsers as first apps to test?

  10. E.M.Smith says:

    Not the first (htop and terminal window, apt-get and some other utilities are first) but close. Why is simple. I run a blog. About 3/4 of what I do depends on a browser. No browser, no joy.

    Yes, I can relegate the SBC to some server like use, and have a couple of headless servers; but those are almost universally the very cheap and slower SBCs. R.Pi M2, Orange Pi One. May even do it with the $17 Pine64 A64. BUT, the Odroid XU4 is an octocore SBC that makes a very nice dekstop that plays video well. So why wast that on a headless server?

    In short: Since my goal is a nice decent performance desktop to run a browser, I test the browser.

  11. Somewhat Reticent says:

    Ah. Perhaps smaller intermediate steps then (when time permits)? Ping, Dillo, Netsurf …
    This may help: https://forum.odroid.com/viewtopic.php?f=96&t=30552
    Good hunting!

  12. E.M.Smith says:

    FWIW, I don’t need to start with Ping as I start with setting the clock from my private network time server. Networking must be up for that, and it assures proper time stamps in following operations. Then I have a “pingout” command that goes by steps to the lab router (inside / outside interfaces) the house router (inside / outside) and the time server and then to an external responder site. I only use that if the apt-get update fails (as apt-get update depends on all that other stuff).

    I’ll then load “my usual suite of applications” that includes NFS so I can mount my NFS server and a couple of other file system types. IF not already installed, then LXDE or XFCE pretty much shakes out the basic functions. (Oh, and Build-Essential goes in too). First thing I do then is launch htop. Gives me system status information and lets me monitor what’s going on, and shows general windowing working OK.

    After that, I’ll log back in graphical. Assuming that works, and I’ve got my nice graphical environment, working networking, nfs file server, update / upgrade done, etc…. THEN I try a browser as that’s pretty much all that is left.

    As per Dillo and Netsurf:

    Not that fond of them as browsers. Even if they DID work, I’d not accept the build if Firefox or Chromium didn’t work. Might be useful as a “fall back” for diagnostics AFTER the big browsers fail, but not before, given my work flow on the blog.

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