T95Z Plus 3/32Gb display and network problems under 8.90.5

derBG · March 11, 2018 at 1:05 PM

Hello guys,

i have a Sunvell t95z Plus with 3/32Gb and a few problems with it.

I have installed the following on a microSD Card:

LibreELEC-S912.arm-8.90.5.img.gz

gxm_q200_3g_t95z.dtb

The problems are:

1. Gbit ethernet is not working properly. Connection is etablished but no traffic goes over the line.

2. The display in the front is not working.

-> Fixed DTB in post #3. Thanks to The Coolest

My actually workarounds are:

1. Connect the Box over Wifi with the LAN. Connect over SSH into the sweet little box and

Code

echo 'ethtool -s eth0 speed 100 duplex full' >> /storage/.config/autostart.sh

this sets the network to 100Mbit which works.

I tried to install the fd628 addon, the display dont work

I also tried some fd628 dev builds, also not working

/proc/device-tree/fd628_dev/ is present

I have generated a keymap file for the t95z remote control. See Attachment

Its strange that the 1Gbit Connection is so faulty.

I hope someone other have this box and can help.

In ARMbian and ARCHlinux the same problems with the ethernet.

Cheers

derBG

boot2k3 · March 11, 2018 at 3:41 PM

Does network work correctly with gxm_q200_3g.dtb ?

**The Coolest** · March 11, 2018 at 4:09 PM

derBG

Try this DTB for the display.

Edit:

The source device tree had incorrect pin mappings. I submitted a fix for both the display and ethernet (switched to 100mbit), so hopefully the DTBs included with future builds will work out of the box.

derBG · March 11, 2018 at 7:41 PM

boot2k3

with the gxm_q200_3g.dtb no difference.

The Coolest

Thank you very much. Your attached file works for the display problem.

The ethernet is still buggy. I the workaround in my first post to set it to 100Mbit.

Do you think it is a software with the DBT or coud it be a hardware fault? Buggy chip design that prevents the Gbit connection?

Thanks in advance

derBG

**The Coolest** · March 11, 2018 at 8:00 PM

derBG

I'm not sure which one it is, but it looks like it's common for T95Z boxes. I think the best test would be to run iperf test from Android to see if you're getting true 1Gbit from the ethernet connection.

derBG · March 11, 2018 at 8:25 PM

The Coolest

Code

------------------------------------------------------------
Client connecting to 10.0.0.171, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[  3] local 10.0.0.240 port 51612 connected with 10.0.0.171 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   667 MBytes   559 Mbits/sec

It seems to work well for so a little box. Not full Gbit but better than 100Mbit

**The Coolest** · March 11, 2018 at 8:28 PM

To be honest, that's a little strange. My 1Gbit S812 gets about 900Mbps both ways with ease.

Is it possible to maybe set it into 1Gbit half duplex mode in LE? Perhaps it's worth a shot.

derBG · March 11, 2018 at 8:32 PM

The Coolest

Set to 1000M half duplex produces the same failure as full duplex

The Android system on the box seems to be not the best. Some bugs. Laggy and so on.

**The Coolest** · March 11, 2018 at 8:37 PM

I'm no Ethernet expert, but I guess it could be some sort of driver or kernel compatibility issue. (in LE)

derBG · March 14, 2018 at 7:33 AM

The Coolest

I've played something with the image 8.90.5. Some things are buggy. So i went to 8.2.2.3. Can you modify the attached dtb? You said mappings of vfd are not correct that the display can work. How you edit a dtb?

Thanks in advance

**The Coolest** · March 14, 2018 at 7:43 AM

derBG

Here you go.

derBG · March 14, 2018 at 7:30 PM

The Coolest

Wow what a support. Thank you very much

tusel · March 14, 2018 at 9:28 PM

One comment to this as i own Sunvell t95z Plus 2/16 - strange thing is, that 1Gbit works just fine in stock Android and also in modified Po*son Android ROM (which i am currently running until this is resolved).Just not in LE.

SPAKO · March 16, 2018 at 12:07 PM

The same problem. Sunvell T95Z Plus 2G is not LAN Libreelec 8.2.2.3. Please help.

This file is the original dtb from the Android T95Z 2G.

**The Coolest** · March 16, 2018 at 12:28 PM

I can't really help with the ethernet issue.

Try what was suggested in an earlier post:

Code

echo 'ethtool -s eth0 speed 100 duplex full' >> /storage/.config/autostart.sh

Run the above command in SSH and then reboot.

Capt.Insano · May 30, 2018 at 9:52 PM

Any update on this?

I have used the

Code

echo 'ethtool -s eth0 speed 100 duplex full' >> /storage/.config/autostart.sh

command do enable ethernet connection, but I am aware that this means no gigabit speeds.

Any hope this can be fixed in device tree settings?

Thanks

Menion · August 21, 2018 at 8:34 AM

Hi

I have the same problem with the 2/16Gb version of t95z (square enclosure).

The problem is 99.9% caused by wrong setting of the TX delay in the RGMII interface

The problem has been addressed in mainline adding configurable tx-delay in dts bindings:

001676.html

Also something similar has been done in PHY driver:

[2/2] net: phy: realtek: fix enabling of the TX-delay for RTL8211F - Patchwork

No the reason why the gigabit connection works in Android stock image and not in libreelec (and coreelec) even if the dts are identical, in my opinion can be explained by either they modified the stmmac driver or the gigabit PHY is of a vendor which driver is not compiled in the Amlogic kernel used by libreelec/coreelec, forcing to fallback to gen_phy

I am looking into it, but I need some guidance on the build system of the kernel

Bye

Whitesak · October 6, 2018 at 12:51 PM

Hi guys,

any solution or new information about it?

I have the same problem with not function gigabit ethernet on Sunvell T95Z Max (2G/16G).

Thank you.