Replying to myself here. Using blob 126.96.36.199.0.7, a month later, I did get 1 or 2 disconnects (on stock firmware I had 6 months uptime), but more annoyingly, I was losing downstream speed gradually. I was able to get 90 Mbps iperf3 TCP performance about a month ago, but it dropped to 80 Mbps, even when switching to another blob, power off/on cycles, etc.
So for measure, I have re-installed the ZTE H369A ("Experiabox v10") monstrosity, and immediately it synced at much higher speeds:
Link Status Up
Showtime 50 h 45 min 17 s
Modulation Type VDSL
Actual Rate(Up/Down) 32313/107674 kbps
Attainable Rate(Up/Down) 32313/109699 kbps
Noise Margin(Up/Down) 5/5.8 dB
Line Attenuation(Up/Down) 1.6/4.9 dB
Output Power(Up/Down) -6.2/12.5 dBm
Data Path(Up/Down) Interleaved/Interleaved
Interleave Depth(Up/Down) 4/8
Interleave Delay(Up/Down) 0/0 ms
INP(Up/Down) 80/79 symbols
Which translates to 97+ Mbps iperf3 downstream even on double NAT.
To me this sadly confirms that OpenWRT VDSL just isn't working for me. I have found a Draytek Vigor 130 for cheap that comes with 8 different firmware/blob combinations that they have certified with ISPs in various countries. My plan is to use it in bridge mode in front of a NanoPI R2S running OpenWRT. I will report here in the future for reference.
I can highly recommend the Draytek Vigor 130 that I got for €25. With "modem 8" firmware I am getting even better speeds than the ISP-provided (KPN Wholesale Netherlands) ZTE H369A / Experiabox v10. Path mode is even "fast" instead of "interleaved" with the ZTE. But no OpenWRT obviously.
> vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 17A State : SHOWTIME
DS Actual Rate :108673000 bps US Actual Rate : 31385000 bps
DS Attainable Rate :109482500 bps US Attainable Rate : 31385000 bps
DS Path Mode : Fast US Path Mode : Fast
DS Interleave Depth : 1 US Interleave Depth : 1
NE Current Attenuation : 9 dB Cur SNR Margin : 5 dB
DS actual PSD : -5.-7 dB US actual PSD : 11. 8 dB
NE CRC Count : 0 FE CRC Count : 79
NE ES Count : 0 FE ES Count : 8
Xdsl Reset Times : 0 Xdsl Link Times : 1
ITU Version : fe004452 ITU Version : 41590000
VDSL Firmware Version : 05-07-09-0F-01-07 [with Vectoring support]
Power Management Mode : DSL_G997_PMS_L0
Test Mode : DISABLE
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 8 dB Far SNR Margin : 5 dB
CO ITU Version : b5004244 CO ITU Version : 434db1bf
DSLAM CHIPSET VENDOR : < BDCM >
I have been going through some other forums as well and found that many users in BE don't necessarily end up with the same line parameters, although they are using a similar blob and firmware. So how the line params are negotiated seems to depend on the DSLAM you are connected to.
I also found that OpenWrt has disabled some functionality in the driver related to DELT. I read up on this and it seems to be a monitoring mechanism used by the DSLAM to evaluate line conditions. So it might be worth to try and enable it to see if that increases the stability (I think it could if DSLAM uses this)? I have also enabled some other counters in the driver which could be nice to add to my dashboard.
Also after enabling bitswap I have at least an uptime twice as good as before. Initially I couldn't stay online longer than a day. Right now it's online longer than 2 days and counting. Most of the interruptions seem to be related to a huge increase in ReTx error counters. So I guess this indicates that there is a huge interference on the line from time to time.
maurer Has firmware version 188.8.131.52.1.6 been stable for you? Im with TalkTalk using an fitzbox at the moment with the same vendor ID as you with a broadcom 192.28) so more then likely using a huawei 288 street cabinet housing type
DSL Info (from fitzbox OS not on openwrt yet)
Broadcom 192.28 - VDSL2 17a (ITU G.993.2)
Receive Direction Send Direction
G.INP on off
Seamless rate adaptation off off
Bitswap on on
G.Vector off off
Carrier record A43 A43
If IFTN / Infineon vendor ID is showing is an ECI cabinet for UK
Did anyone notice the DSL uptime drift (or lack of it) with different firmwares?
I'm currently using the one provided by default and I had to multiply the uptime value by around 1,0235 to get the correct uptime, so I'd like to know if it's specific to the firmware version or a general issue with xDSL modem in SoC?
Just trying to extract "filesystem.image" from the latest Labor image of Fritz box 7490 (build 85134) via 7z and while extracting I get the following: "No files to process"
Nothing is extracted to the folder.
Does anyone know if something changed recently in terms of the image structure?
I wanted to check if a newer version of the lantiq xdsl firmware exists or if it is still 184.108.40.206.0.7 - normally AVM is/was the place to look for a newer version.
Is that still your recommended firmware for a 3370?
I just switched from a somewhat stable TL-W8970B on 100/40 VDSL line to the fritzbox and I am having a hard time finding a firmware that does not reconnect every 15 minutes... Right now I am on the one from inside https://download.avm.de/archive/fritz.box/fritzbox.wlan_3370/firmware/deutsch/ and it seems stable for now, but the speed is disappointing. For what it's worth: with the TP-Link I had 5.7.6.A.0.7 and it worked okay.