Poincare

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  1. I don't know what is using zram. Is it just installed, enabled, or turned on by Armbian by default? executing $sudo apt install zram-config: $ sudo apt install zram-config Reading package lists... Done Building dependency tree Reading state information... Done Package zram-config is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: linux-buster-root-espressobin linux-buster-root-xt-q8l-v10:armhf linux-buster-root-tinkerboard:armhf linux-buster-root-orangepizeroplus2-h3:armhf linux-buster-root-orangepizero:armhf linux-buster-root-orangepiplus2e:armhf linux-buster-root-orangepiplus:armhf linux-buster-root-orangepipcplus:armhf linux-buster-root-orangepipc:armhf linux-buster-root-orangepione:armhf linux-buster-root-orangepilite:armhf linux-buster-root-orangepi2:armhf linux-buster-root-orangepi-r1:armhf linux-buster-root-odroidxu4:armhf linux-buster-root-next-xt-q8l-v10:armhf linux-buster-root-next-udoo:armhf linux-buster-root-next-tritium-h3:armhf linux-buster-root-next-tinkerboard:armhf linux-buster-root-next-orangepizeroplus2-h3:armhf linux-buster-root-next-orangepizero:armhf linux-buster-root-next-orangepiplus2e:armhf linux-buster-root-next-orangepiplus:armhf linux-buster-root-next-orangepipcplus:armhf linux-buster-root-next-orangepipc:armhf linux-buster-root-next-orangepione:armhf linux-buster-root-next-orangepilite:armhf linux-buster-root-next-orangepi2:armhf linux-buster-root-next-orangepi-r1:armhf linux-buster-root-next-odroidxu4:armhf linux-buster-root-next-odroidc1:armhf linux-buster-root-next-nanopineo:armhf linux-buster-root-next-nanopim1:armhf linux-buster-root-next-nanopiduo2:armhf linux-buster-root-next-nanopiduo:armhf linux-buster-root-next-nanopiair:armhf linux-buster-root-next-nanopi-r1:armhf linux-buster-root-next-lime2:armhf linux-buster-root-next-lime:armhf linux-buster-root-next-helios4:armhf linux-buster-root-next-cubox-i:armhf linux-buster-root-next-cubietruck:armhf linux-buster-root-next-clearfogpro:armhf linux-buster-root-next-clearfogbase:armhf linux-buster-root-next-bananapipro:armhf linux-buster-root-next-bananapim2plus:armhf linux-buster-root-next-bananapi:armhf linux-buster-root-nanopineo:armhf linux-buster-root-nanopim1:armhf linux-buster-root-nanopiduo:armhf linux-buster-root-nanopiair:armhf linux-buster-root-lime2:armhf linux-buster-root-helios4:armhf linux-buster-root-cubox-i:armhf linux-buster-root-cubietruck:armhf linux-buster-root-clearfogpro:armhf linux-buster-root-clearfogbase:armhf linux-buster-root-bananapipro:armhf linux-buster-root-bananapim2plus:armhf linux-buster-root-bananapi:armhf linux-buster-root-z28pro linux-buster-root-rockpro64 linux-buster-root-rockpi-4b linux-buster-root-rock64 linux-buster-root-renegade linux-buster-root-pinebook-a64 linux-buster-root-pine64so linux-buster-root-pine64 linux-buster-root-orangepiwin linux-buster-root-orangepi-rk3399 linux-buster-root-odroidn2 linux-buster-root-odroidc2 linux-buster-root-next-tritium-h5 linux-buster-root-next-teres-a64 linux-buster-root-next-pineh64 linux-buster-root-next-pinebook-a64 linux-buster-root-next-pine64so linux-buster-root-next-pine64 linux-buster-root-next-orangepizeroplus2-h5 linux-buster-root-next-orangepizeroplus linux-buster-root-next-orangepiwin linux-buster-root-next-orangepiprime linux-buster-root-next-orangepipc2 linux-buster-root-next-orangepioneplus linux-buster-root-next-orangepilite2 linux-buster-root-next-orangepi3 linux-buster-root-next-odroidc2 linux-buster-root-next-nanopineoplus2 linux-buster-root-next-nanopineocore2 linux-buster-root-next-nanopineo2 linux-buster-root-next-nanopim3 linux-buster-root-next-nanopik2-s905 linux-buster-root-next-nanopik1plus linux-buster-root-next-nanopifire3 linux-buster-root-next-nanopct3plus linux-buster-root-next-nanopct3 linux-buster-root-next-lime-a64 linux-buster-root-next-lepotato linux-buster-root-next-espressobin linux-buster-root-next-bananapim64 linux-buster-root-nanopineo4 linux-buster-root-nanopim4 linux-buster-root-nanopik2-s905 linux-buster-root-nanopct4 linux-buster-root-macchiatobin-doubleshot linux-buster-root-lime-a64 linux-buster-root-lepotato E: Package 'zram-config' has no installation candidate And, executing $sudo apt remove zram-config: $ sudo apt remove zram-config Reading package lists... Done Building dependency tree Reading state information... Done Package 'zram-config' is not installed, so not removed 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  2. I am using the latest kernel from the Armbian repo (4.9.190-odroidn2 #1 SMP PREEMPT Mon Sep 2 07:23:40 CEST 2019) with the Debian Buster minimal image.
  3. I have installed the Debian Buster minimal image of Armbian on the Odroid N2 but the board seems to lock or mostly freeze up when using SCP to it. Transfers stall and there is no progress after about 30-45 seconds. I think there is a kernel error but I'm not sure how to interpret DMESG output. There seems to be continuous errors with zram0. I have tried to search the forum for related posts but there do not seem to be ones that support fixing or resolving the issue. Kernel: $ uname -a Linux nas 4.9.190-odroidn2 #1 SMP PREEMPT Mon Sep 2 07:23:40 CEST 2019 aarch64 GNU/Linux The DMESG output is below for reference: [ 1853.914980] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1853.915358] zram: Decompression failed! err=-22, page=12750 [ 1853.915368] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1857.967511] zram: Decompression failed! err=-22, page=12750 [ 1857.967521] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1867.966226] zram: Decompression failed! err=-22, page=12750 [ 1867.966237] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1877.969360] zram: Decompression failed! err=-22, page=12750 [ 1877.969371] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1887.957354] zram: Decompression failed! err=-22, page=12750 [ 1887.957364] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1897.882434] zram: Decompression failed! err=-22, page=12750 [ 1897.882444] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1907.879540] zram: Decompression failed! err=-22, page=12750 [ 1907.879550] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1917.919592] zram: Decompression failed! err=-22, page=12750 [ 1917.919698] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1928.036110] zram: Decompression failed! err=-22, page=12750 [ 1928.036120] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1937.880451] zram: Decompression failed! err=-22, page=12750 [ 1937.880462] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1947.948827] zram: Decompression failed! err=-22, page=12750 [ 1947.948837] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1957.983086] zram: Decompression failed! err=-22, page=12750 [ 1957.983097] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1967.952332] zram: Decompression failed! err=-22, page=12750 [ 1967.952343] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1977.926635] zram: Decompression failed! err=-22, page=12750 [ 1977.926646] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1981.024473] zram: Decompression failed! err=-22, page=12750 [ 1981.024483] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1991.040385] zram: Decompression failed! err=-22, page=12750 [ 1991.040396] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1992.281672] device-mapper: uevent: version 1.0.3 [ 1992.284490] device-mapper: ioctl: 4.35.0-ioctl (2016-06-23) initialised: dm-devel@redhat.com [ 1994.751327] zram: Decompression failed! err=-22, page=12750 [ 1994.751339] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1994.967958] zram: Decompression failed! err=-22, page=12750 [ 1994.967964] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1995.026409] zram: Decompression failed! err=-22, page=12750 [ 1995.026415] Buffer I/O error on dev zram0, logical block 12750, async page read [ 1998.139633] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: user_xattr,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl [ 2000.897679] zram: Decompression failed! err=-22, page=12750 [ 2000.897690] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2001.008865] zram: Decompression failed! err=-22, page=12750 [ 2001.008875] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2010.962674] zram: Decompression failed! err=-22, page=12750 [ 2010.962709] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2011.076469] zram: Decompression failed! err=-22, page=12750 [ 2011.076478] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2021.003907] zram: Decompression failed! err=-22, page=12750 [ 2021.003917] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2021.119985] zram: Decompression failed! err=-22, page=12750 [ 2021.119996] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2156.120887] zram: Decompression failed! err=-22, page=12750 [ 2156.120897] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2156.214443] zram: Decompression failed! err=-22, page=12750 [ 2156.214453] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2161.167895] zram: Decompression failed! err=-22, page=12750 [ 2161.167907] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2171.211060] zram: Decompression failed! err=-22, page=12750 [ 2171.211071] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2181.241182] zram: Decompression failed! err=-22, page=12750 [ 2181.241193] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2191.268602] zram: Decompression failed! err=-22, page=12750 [ 2191.268613] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2201.282729] zram: Decompression failed! err=-22, page=12750 [ 2201.282739] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2204.312226] RTW: rtw_issue_addbareq_cmd, p=6 [ 2204.312307] RTW: BA_starting_seqctrl = 25 for TID=6 [ 2204.312319] RTW: issue_addba_req(wlan0) ra=40:16:7e:f4:56:8c tid=6 [ 2204.313166] RTW: OnAction_back [ 2204.313168] RTW: OnAction_back, action=1 [ 2204.313170] RTW: agg_enable for TID=6 [ 2211.183085] zram: Decompression failed! err=-22, page=12750 [ 2211.183096] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2221.229835] zram: Decompression failed! err=-22, page=12750 [ 2221.229847] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2231.243958] zram: Decompression failed! err=-22, page=12750 [ 2231.243968] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2241.269032] zram: Decompression failed! err=-22, page=12750 [ 2241.269043] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2251.141468] zram: Decompression failed! err=-22, page=12750 [ 2251.141479] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2261.303870] zram: Decompression failed! err=-22, page=12750 [ 2261.303880] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2271.205281] zram: Decompression failed! err=-22, page=12750 [ 2271.205291] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2281.181416] zram: Decompression failed! err=-22, page=12750 [ 2281.181426] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2291.199084] zram: Decompression failed! err=-22, page=12750 [ 2291.199094] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2301.154395] zram: Decompression failed! err=-22, page=12750 [ 2301.154405] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2311.143294] zram: Decompression failed! err=-22, page=12750 [ 2311.143304] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2321.168656] zram: Decompression failed! err=-22, page=12750 [ 2321.168667] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2331.143814] zram: Decompression failed! err=-22, page=12750 [ 2331.143824] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2341.150010] zram: Decompression failed! err=-22, page=12750 [ 2341.150020] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2351.149577] zram: Decompression failed! err=-22, page=12750 [ 2351.149587] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2361.158088] zram: Decompression failed! err=-22, page=12750 [ 2361.158099] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2371.137373] zram: Decompression failed! err=-22, page=12750 [ 2371.137384] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2381.158271] zram: Decompression failed! err=-22, page=12750 [ 2381.158281] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2391.164961] zram: Decompression failed! err=-22, page=12750 [ 2391.164972] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2401.160951] zram: Decompression failed! err=-22, page=12750 [ 2401.160961] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2411.167289] zram: Decompression failed! err=-22, page=12750 [ 2411.167299] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2421.162192] zram: Decompression failed! err=-22, page=12750 [ 2421.162203] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2431.169304] zram: Decompression failed! err=-22, page=12750 [ 2431.169315] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2441.164644] zram: Decompression failed! err=-22, page=12750 [ 2441.164654] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2451.481731] zram: Decompression failed! err=-22, page=12750 [ 2451.481744] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2461.431068] zram: Decompression failed! err=-22, page=12750 [ 2461.431078] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2471.410033] zram: Decompression failed! err=-22, page=12750 [ 2471.410043] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2481.175795] zram: Decompression failed! err=-22, page=12750 [ 2481.175805] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2491.174282] zram: Decompression failed! err=-22, page=12750 [ 2491.174293] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2501.181049] zram: Decompression failed! err=-22, page=12750 [ 2501.181059] Buffer I/O error on dev zram0, logical block 12750, async page read [ 2659.199980] INFO: task jbd2/dm-0-8:4698 blocked for more than 120 seconds. [ 2659.199987] Not tainted 4.9.190-odroidn2 #1 [ 2659.199988] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2659.199990] jbd2/dm-0-8 D 0 4698 2 0x00000000 [ 2659.199996] Call trace: [ 2659.200007] [<ffffff8009086614>] __switch_to+0x94/0xb8 [ 2659.200014] [<ffffff8009dc43ac>] __schedule+0x27c/0x7b0 [ 2659.200017] [<ffffff8009dc4920>] schedule+0x40/0xa8 [ 2659.200021] [<ffffff8009dc7a1c>] schedule_timeout+0x1c4/0x438 [ 2659.200024] [<ffffff8009dc40c8>] io_schedule_timeout+0x98/0x100 [ 2659.200027] [<ffffff8009dc52a8>] bit_wait_io+0x20/0x68 [ 2659.200031] [<ffffff8009dc4eac>] __wait_on_bit+0xac/0xe8 [ 2659.200034] [<ffffff8009dc4fec>] out_of_line_wait_on_bit+0x6c/0x80 [ 2659.200039] [<ffffff800926eae8>] __wait_on_buffer+0x38/0x48 [ 2659.200044] [<ffffff800935929c>] jbd2_journal_commit_transaction+0x128c/0x1688 [ 2659.200049] [<ffffff800935e728>] kjournald2+0xb8/0x238 [ 2659.200053] [<ffffff80090ca1d8>] kthread+0xd8/0xf0 [ 2659.200056] [<ffffff8009083960>] ret_from_fork+0x10/0x30 [ 2780.025559] INFO: task jbd2/dm-0-8:4698 blocked for more than 120 seconds. [ 2780.025565] Not tainted 4.9.190-odroidn2 #1 [ 2780.025566] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2780.025569] jbd2/dm-0-8 D 0 4698 2 0x00000000 [ 2780.025574] Call trace: [ 2780.025585] [<ffffff8009086614>] __switch_to+0x94/0xb8 [ 2780.025592] [<ffffff8009dc43ac>] __schedule+0x27c/0x7b0 [ 2780.025595] [<ffffff8009dc4920>] schedule+0x40/0xa8 [ 2780.025599] [<ffffff8009dc7a1c>] schedule_timeout+0x1c4/0x438 [ 2780.025602] [<ffffff8009dc40c8>] io_schedule_timeout+0x98/0x100 [ 2780.025606] [<ffffff8009dc52a8>] bit_wait_io+0x20/0x68 [ 2780.025609] [<ffffff8009dc4eac>] __wait_on_bit+0xac/0xe8 [ 2780.025612] [<ffffff8009dc4fec>] out_of_line_wait_on_bit+0x6c/0x80 [ 2780.025617] [<ffffff800926eae8>] __wait_on_buffer+0x38/0x48 [ 2780.025622] [<ffffff800935929c>] jbd2_journal_commit_transaction+0x128c/0x1688 [ 2780.025627] [<ffffff800935e728>] kjournald2+0xb8/0x238 [ 2780.025631] [<ffffff80090ca1d8>] kthread+0xd8/0xf0 [ 2780.025634] [<ffffff8009083960>] ret_from_fork+0x10/0x30 [ 2900.851139] INFO: task jbd2/dm-0-8:4698 blocked for more than 120 seconds. [ 2900.851145] Not tainted 4.9.190-odroidn2 #1 [ 2900.851146] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2900.851148] jbd2/dm-0-8 D 0 4698 2 0x00000000 [ 2900.851154] Call trace: [ 2900.851165] [<ffffff8009086614>] __switch_to+0x94/0xb8 [ 2900.851172] [<ffffff8009dc43ac>] __schedule+0x27c/0x7b0 [ 2900.851175] [<ffffff8009dc4920>] schedule+0x40/0xa8 [ 2900.851179] [<ffffff8009dc7a1c>] schedule_timeout+0x1c4/0x438 [ 2900.851182] [<ffffff8009dc40c8>] io_schedule_timeout+0x98/0x100 [ 2900.851187] [<ffffff8009dc52a8>] bit_wait_io+0x20/0x68 [ 2900.851190] [<ffffff8009dc4eac>] __wait_on_bit+0xac/0xe8 [ 2900.851193] [<ffffff8009dc4fec>] out_of_line_wait_on_bit+0x6c/0x80 [ 2900.851198] [<ffffff800926eae8>] __wait_on_buffer+0x38/0x48 [ 2900.851203] [<ffffff800935929c>] jbd2_journal_commit_transaction+0x128c/0x1688 [ 2900.851207] [<ffffff800935e728>] kjournald2+0xb8/0x238 [ 2900.851212] [<ffffff80090ca1d8>] kthread+0xd8/0xf0 [ 2900.851215] [<ffffff8009083960>] ret_from_fork+0x10/0x30
  4. On an Odroid N2 booting off emmc with latest Armbian (N2 version) and I seem to be experiencing systemd issues. That is, I am wondering about why dmesg outputs large amounts of lines like this: ... [ 408.353157] systemd[1]: apt-daily-upgrade.timer: Adding 3min 5.637095s random time. [ 593.391396] systemd[1]: apt-daily-upgrade.timer: Adding 13min 57.828168s random time. [ 624.553751] systemd[1]: apt-daily-upgrade.timer: Adding 43min 35.931355s random time. [ 2081.551467] systemd[1]: apt-daily-upgrade.timer: Adding 34min 59.099369s random time. [ 2081.722289] systemd[1]: apt-daily-upgrade.timer: Adding 4min 9.630865s random time. [ 2081.849465] systemd[1]: apt-daily-upgrade.timer: Adding 30min 53.416287s random time. ... Lines like above seem to pop up randomly., sometimes in groups of 30 - 50. There is not anything unusual about what is happening on this board. I don't know why daily upgrade timer adds random time, or even why it is needed. Load average seems normal, there do not appear to be any memory issues (4GB board, with about 800mb in use). These "adding random time" errors just pop up in large groups for some reason. Is there a fix or way to get daily upgrade timer to not repeatedly add random time?
  5. Can this work on the Armbian N2 release? Also, I have EMMC and no SD CARD. I got about as far as But, Armbian for N2 does not have boot.cmd. Do you mean boot.ini? Further, there is no boot.scr so this command doesn't appear to work. And, also I believe "-A arm" should reflect ARM64 or arm64? I'm not sure which notation is correct. But, the N2 is an ARM64 board. There also appears to be an error with CRYPTSETUP in /etc/initramfs-tools/initramfs.conf, as it is reported to be deprecated. Hopefully someone can assist with continuing this guide as I'd really like to get the whole EMMC encrypted. Thanks in advance.
  6. Hello, I have Armbian running on my N2. I have installed OMV through armbian-config. There did not appear to be any errors; and, OMV is assessible via the web gui. However, when I try to install NCP via armbian-config, it just says "Loading install info..." then goes back to the Softy screen. I do not see any other errors. I do not know where to look for what errors are preventing NCP from installing since armbian-config and my N2 seem to be functioning properly at the moment. Does anyone know how to get NCP installed?
  7. Sorry for asking for help, bro.
  8. I have installed Armbian 5.86, stable and installed NCP through Softy. However, when I connect to IPADDR:4443 or https://nextcloudpi there is nothing to be found or connection refused. Is there some magic sauce used to get NCP working on Armbian? I even went back into Softy and reinstalled it but it keeps the * next to it as it's already installed. T_T
  9. I also installed OMV via Softy but now would like to uninstall it. Softy doesn't seem to support uninstall, as of May 2019, and apt purge didn't seem to also remove `openmediavault`. Does anyone have a clean way to properly uninstall OMV (via Softy?) or do I have to completely reinstall Armbian to get a system without it?
  10. Does @JuanjoAr's build include the Hard Kernel Linux kernel specific to the N2? Or does that ARMBIAN development release include any Hard Kernel N2 patches?
  11. Hello, just curious ... is there a working Armbian for folks with the N2 ? I didn't see a release on the download page and forums search didn't find it, if it exists. Thanks.
  12. Didn't see anything from a search of the forums, so ... on a Rock64 with Armbian, I have compiled the 8723bu driver since it is missing. However, when this driver is loaded, only 2G wifi APs are visible. I am trying to connect to a 5G wifi AP. Other devices do not have a problem connecting to this AP. The Armbian install just can't seem to see it. I see the usb wifi in iw and in iwconfig. I'm just not sure how to get the usb wifi to connect to 5G when only 2G wifi APs show up. I've tried the usb wifi in all three different USB ports, and in all cases it still can't see 5G wifi, only 2G. Is there some config file or manual command that I can issue that will support my wifi in seeing 5G wifi APs? Thanks.