Hi, I can confirm that the issue is present in Armbian v26.5.1 with current kernel versions 6.18.x, and that it is resolved in the edge kernels 6.19.x and 7.1.x. Armbian v26.5.1 - current kernel 6.18.x - NOT OK (many retrans and ~368 Mb/sec): root@odroidtest:~# grep -a --null-data U-Boot /dev/mtd0ro U-Boot SPL 2026.01_armbian-2026.01-S127a-Pb401-H8652-Vab81-Bd0d2-R448a (May 20 2026 - 22:28:40 +0000) root@odroidtest:~# uname -a Linux odroidtest 6.18.35-current-rockchip64 #2 SMP PREEMPT Tue Jun 9 10:28:53 UTC 2026 aarch64 GNU/Linux root@odroidtest:~# iperf3 -c 192.168.0.1 Connecting to host 192.168.0.1, port 5201 [ 5] local 192.168.0.15 port 42940 connected to 192.168.0.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 43.0 MBytes 360 Mbits/sec 199 26.9 KBytes [ 5] 1.00-2.00 sec 44.9 MBytes 376 Mbits/sec 172 26.9 KBytes [ 5] 2.00-3.00 sec 41.8 MBytes 350 Mbits/sec 188 39.6 KBytes [ 5] 3.00-4.00 sec 45.1 MBytes 379 Mbits/sec 178 33.9 KBytes [ 5] 4.00-5.00 sec 41.9 MBytes 351 Mbits/sec 185 17.0 KBytes [ 5] 5.00-6.00 sec 46.5 MBytes 390 Mbits/sec 168 35.4 KBytes [ 5] 6.00-7.00 sec 42.8 MBytes 359 Mbits/sec 170 24.0 KBytes [ 5] 7.00-8.00 sec 47.0 MBytes 394 Mbits/sec 164 31.1 KBytes [ 5] 8.00-9.00 sec 41.0 MBytes 344 Mbits/sec 178 18.4 KBytes [ 5] 9.00-10.00 sec 44.8 MBytes 375 Mbits/sec 167 15.6 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 439 MBytes 368 Mbits/sec 1769 sender [ 5] 0.00-10.00 sec 438 MBytes 368 Mbits/sec receiver iperf Done. Armbian v26.5.1 - edge kernel 6.19 - OK root@odroidtest:~# grep -a --null-data U-Boot /dev/mtd0ro U-Boot SPL 2026.01_armbian-2026.01-S127a-Pb401-H8652-Vab81-Bd0d2-R448a (May 20 2026 - 22:28:40 +0000) root@odroidtest:~# uname -a Linux odroidtest 6.19.0-edge-rockchip64 #1 SMP PREEMPT Sun Feb 8 21:03:27 UTC 2026 aarch64 GNU/Linux root@odroidtest:~# iperf3 -c 192.168.0.1 Connecting to host 192.168.0.1, port 5201 [ 5] local 192.168.0.15 port 35634 connected to 192.168.0.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 113 MBytes 950 Mbits/sec 0 1.81 MBytes [ 5] 1.00-2.00 sec 111 MBytes 933 Mbits/sec 0 1.81 MBytes [ 5] 2.00-3.00 sec 112 MBytes 944 Mbits/sec 0 1.81 MBytes [ 5] 3.00-4.00 sec 113 MBytes 947 Mbits/sec 0 1.81 MBytes [ 5] 4.00-5.00 sec 112 MBytes 941 Mbits/sec 0 1.81 MBytes [ 5] 5.00-6.00 sec 111 MBytes 933 Mbits/sec 0 1.81 MBytes [ 5] 6.00-7.00 sec 113 MBytes 948 Mbits/sec 0 1.81 MBytes [ 5] 7.00-8.00 sec 111 MBytes 934 Mbits/sec 1 929 KBytes [ 5] 8.00-9.00 sec 113 MBytes 948 Mbits/sec 0 929 KBytes [ 5] 9.00-10.00 sec 113 MBytes 944 Mbits/sec 0 929 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.10 GBytes 942 Mbits/sec 1 sender [ 5] 0.00-10.00 sec 1.09 GBytes 939 Mbits/sec receiver iperf Done. Armbian v26.5.1 - edge kernel 7.1 - OK root@odroidtest:~# grep -a --null-data U-Boot /dev/mtd0ro U-Boot SPL 2026.01_armbian-2026.01-S127a-Pb401-H8652-Vab81-Bd0d2-R448a (May 20 2026 - 22:28:40 +0000) root@odroidtest:~# uname -a Linux odroidtest 7.1.0-edge-rockchip64 #1 SMP PREEMPT Sun Jun 14 14:58:38 UTC 2026 aarch64 GNU/Linux root@odroidtest:~# iperf3 -c 192.168.0.1 Connecting to host 192.168.0.1, port 5201 [ 5] local 192.168.0.15 port 37256 connected to 192.168.0.1 port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 114 MBytes 958 Mbits/sec 0 1.72 MBytes [ 5] 1.00-2.00 sec 111 MBytes 933 Mbits/sec 0 1.72 MBytes [ 5] 2.00-3.00 sec 113 MBytes 948 Mbits/sec 0 1.72 MBytes [ 5] 3.00-4.00 sec 112 MBytes 944 Mbits/sec 0 1.72 MBytes [ 5] 4.00-5.00 sec 112 MBytes 936 Mbits/sec 0 1.72 MBytes [ 5] 5.00-6.00 sec 113 MBytes 947 Mbits/sec 0 1.72 MBytes [ 5] 6.00-7.00 sec 112 MBytes 935 Mbits/sec 0 1.72 MBytes [ 5] 7.00-8.00 sec 113 MBytes 945 Mbits/sec 0 1.72 MBytes [ 5] 8.00-9.00 sec 112 MBytes 943 Mbits/sec 0 2.19 MBytes [ 5] 9.00-10.00 sec 112 MBytes 937 Mbits/sec 0 2.19 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 1.10 GBytes 943 Mbits/sec 0 sender [ 5] 0.00-10.00 sec 1.10 GBytes 941 Mbits/sec receiver iperf Done.

Hi — I've been following this thread, the 100 Mbit ethernet cap and the silent mainline boot hang especially. I ended up doing a full mainline bring-up of the 4A on 6.18.38 and got gigabit ethernet working properly (RX/TX), plus the boot hang sorted, so I wanted to share the whole patch series in case it helps here. Full disclosure: I'm not a kernel developer by trade — I got most of this working with a lot of help from AI coding agents, leaning hard on the BSP 5.15 as the source of truth. In my own testing everything seems stable, but I'd genuinely welcome anyone who actually knows this stuff to review the patches and tell me what I got wrong or did in a hacky way. No egos here — I'm sharing it in case it's useful and to get feedback, not claiming it's perfect. 🙂 What works (confirmed on hardware): HDMI KMS display (DE33/DE3.5 + TCON-TV + DW-HDMI 2.0 + Inno PHY) — 720p/1080p, clean VSU8 scaling GPU Mali-G57 (Panfrost) — accelerated (KDE Plasma Wayland) HDMI audio (i2s2 → dw-hdmi) — PCM out to the TV Ethernet GMAC1 (YT8531 PHY, RGMII) — full gigabit RX/TX WiFi AP6256 (BCM43456, brcmfmac, SDIO) — 2.4/5 GHz scan + assoc reboot / poweroff (sunxi_wdt / AXP717) AFBC scanout (v350 AFBD decoder) USB — the 4 rear ports (all USB 2.0; the board doesn't wire the SoC's USB3) — HID + mass storage, hotplug THS thermal sensors (5 zones: cpu_l / cpu_b / gpu / npu / ddr) + 110 °C critical trip CPU cpufreq/DVFS (little cluster up to 1.416 GHz, big cluster up to 1.8 GHz) + thermal throttling GPU devfreq/DVFS (Panfrost, 150–600 MHz) + thermal throttling HDMI HPD / hotplug (native, no force) Known not working / help wanted: eMMC — not tested (I don't have a module). I saw the mmc2: error -110 reports earlier in the thread; happy to dig into it with anyone who has eMMC. Hardware video decode (VPU) — no driver in 6.18 yet (software decode works). Suspend/hibernate — untested. 4GB variant — expected to work out of the box (the bootloader auto-detects the RAM size and fills in /memory at boot; verified over UART on the 2GB board). I only own the 2GB variant, so if you have the 4GB one, a free -h confirmation would be very welcome. NVMe SSD — untested, no drive here. Everything so far has only run from microSD. Freshness note: the cpufreq/thermal/GPU-devfreq block landed this very week and is still under soak testing on my board — everything else has more mileage. I'll report anything that shakes out in this thread. Repo / patches: https://github.com/ut-slayer/orangepi-4a-mainline It's a git format-patch series (~106 patches) on top of 6.18.38 vanilla, plus a defconfig and the board .dts. The README groups the patches by intended destination: generic sunxi fixes (pinctrl, watchdog vs PSCI, AXP717 poweroff, a RESET_GPIO/mmc-pwrseq bug affecting any sunxi board with SDIO WiFi), the HDMI KMS display series (largely ported/adapted from the minimyth2 / Justin Suess H728 work, with original authorship kept in the patch headers), the A523 CPU CCU + thermal + DVFS, board integration (dts + defconfig), and a few U-Boot BSP workarounds that go away with mainline U-Boot. Coming next: a ready-to-flash Debian 13 (Trixie) image with accelerated Panfrost and KDE Plasma on Wayland — I'll share it in this thread once it's had a bit more soak testing. Happy to open a PR against armbian/build (sun55iw3 family) with the board dts + defconfig + patches if there's interest. Feedback and testers welcome! Credits: minimyth2 / Justin Suess for the H728 display groundwork, and the linux-sunxi community. Cheers.

moved to tvboxes

These error messages don't look good. Have you tried setting up and working with that wifi device alone (i.e. without all that bridging stuff)? This seems to me like a problem with either firmware loading for this adapter, or an unusable configuration, like unusable tx/rx power or channel for the specified region (e.g. if there has been no region code set for that interface).

@jshkol, I saw that an Orange4Pro build was approved yesterday—I have one of those myself. What’s the status regarding the NPU? I actually wanted to start a build myself at one point, and it’s great to see you so dedicated to it. How would I go about building it using the new image? I have a homelab and would love to test it out and share some feedback with you.