Fedora_Neso_Volans_WT1035

Install Fedora 38 on Tablet Neso Volans WT1035

Hardware

- CPU: Intel Atom Bay Trail Z3735F
- Video: Intel HD Graphics (Atom Processor Z36xxx/Z37xxx Series Graphics & Display) 
- Screen: 10.1"
- WiFi: Realtek RTL8723BS Wireless LAN 80211n SDIO Network Adapter
- Disks: mmcblk0: mmc0:0001 NCard 28.9 GiB
- RAM: LPDDR3 1067 2GB (on-board)
- BT: Realtek RTL8723BS_BT
- Camera: Unknown (maybe gc0310 and ov2680 )

Project Status

+ Boot Standard Kernel
+ Detect hard drives
+ Shutdown
+ Reboot
* Hibernation
+ Sleep / Suspend
+ Battery monitor
+ Xorg
+     OpenGL (60FPS on glxgears)
+     Resize-and-Rotate(randr)
* XWayland
+ Screen backlight
* Light sensor
* Switch to External Screen (HDMI)
+ Mouse Built-in (Touchscreen)
+ Bluetooth
+ Wireless/Wifi
+ Sound
+ MicroSD card reader
- Built-in camera
+ Accelerometers
* Side connector

Legend : 
+ xxx = OK
- xxx = Not work (maybe Unsupported)
* xxx = Unknown, Not Tested

1. Install Fedora 38
2. Bluetooth / WIFI
3. Camera
4. Accelerometer
5. Touchscreen
6. Rotate Screen
7. Side connector
8. VA-API
9. Sound
10. Others
11. Troubleshooting

---

1. Install Fedora 38

• Install 38 from USB

2. Bluetooth / WIFI

OLD (NOT RECOMENDED)

• Copy Firmware/rtl_bt to /lib/firmware/

3. Camera

• Not work. Not idetified yet

4. Accelerometer

• In kernel module bmc150_accel_i2c.
• Ok iio-sensor-proxy

5. Touchscreen

   NATIVE evdev (WORKS ON WAYLAND)

• From touchscreen-native:
• 1 - Copy mssl1680.fw to /lib/firmware/silead
• 2 - Copy dsdt.aml to /boot
• 3 - Copy 01-silead.conf to /etc/X11/xorg.conf.d
• 4 - Copy 01_acpi to /etc/grub.d and make executable
• 5 - Reconstruct grub.conf: grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg (if fail with /usr/bin/grub2-editenv: error: invalid environment block. use: grub2-editenv /boot/efi/EFI/fedora/grubenv create )
• 6 - Reboot

NATIVE libinput

• Idem evdev but:
• 3 - Copy 99-calibration.conf to /etc/X11/xorg.conf.d

*OLD (NOT RECOMENDED)*

• Copy Firmware file Firmware/silead_ts.fw to /lib/firmware
• Compile this trivial modified version of gslx680_acpi (from: https://github.com/onitake/gslx680-acpi)
• Sign kernel module: https://blog.delouw.ch/2017/04/18/signing-linux-kernel-kodules-and-enforce-to-load-only-signed-modules/
• Install Kernel Module: insmod ./gslx680_ts_acpi.ko

- ***Advanced: Extract Firmware***

  - From your original android retrieve files gslx68x_ts.ko and infosystem.txt 
  - Search in infosystem.txt something like this:

06-05 13:01:55.099   142   142 I KERNEL  : [    6.013768] ****************************************
06-05 13:01:55.099   142   142 I KERNEL  : [    6.013773] GSLX680 Enter gsl_ts_probe
06-05 13:01:55.099   142   142 I KERNEL  : [    6.013789] ==kzalloc success=
06-05 13:01:55.099   142   142 I KERNEL  : [    6.013798] === GSL I2C addr = 40 ===
06-05 13:01:55.099   142   142 I KERNEL  : [    6.013804] [GSLX680] Enter gslX680_ts_init
06-05 13:01:55.099   142   142 I KERNEL  : [    6.014538] input: GSL_TP as /devices/platform/80860F41:03/i2c-4/4-0040/input/input8
06-05 13:01:55.099   142   142 I KERNEL  : [    6.014621] [tp_gsl] IRQ_PORT =133
06-05 13:01:55.099   142   142 I KERNEL  : [    6.014650] [tp_gsl] RST_PORT =128
06-05 13:01:55.179   142   142 I KERNEL  : [    6.099334] I read reg 0xf0 is 0
06-05 13:01:55.199   142   142 I KERNEL  : [    6.117701] I write reg 0xf0 0x12
06-05 13:01:55.219   142   142 I KERNEL  : [    6.138956] I read reg 0xf0 is 0x12
06-05 13:01:55.389   142   142 I KERNEL  : [    6.308633] read 0xfc = 80 36 0 0
06-05 13:01:55.389   142   142 I KERNEL  : [    6.308688] =============gsl_load_fw start==============
06-05 13:01:55.629   142   142 I KERNEL  : [    6.551825] =============gsl_load_fw end==============
06-05 13:01:55.739   142   142 I KERNEL  : [    6.656985] =============gsl_load_cfg_adjust check start==============
06-05 13:01:56.249   142   142 I KERNEL  : [    7.169676] fuc:cfg_adjust, b8: 0 1 0 0
06-05 13:01:56.249   142   142 I KERNEL  : [    7.169729] fuc:cfg_adjust, GSL_TP_ID_TEMP: 0 
06-05 13:01:56.249   142   142 I KERNEL  : [    7.169754] temp[] 0 1 0 0
06-05 13:01:56.249   142   142 I KERNEL  : [    7.169773] fuc:cfg_adjust, cfg_adjust_used_id: 1 
06-05 13:01:56.249   142   142 I KERNEL  : [    7.169789] =============gsl_load_cfg_adjust check end==============
06-05 13:01:56.419   142   142 I KERNEL  : [    7.339029] read 0xfc = 80 36 0 0
06-05 13:01:56.419   142   142 I KERNEL  : [    7.339085] =============gsl_load_fw start==============
06-05 13:01:56.419   142   142 I KERNEL  : [    7.339109] I101_GSL3692_8001280_GG_FC_FC101S123
06-05 13:01:57.669   142   142 I KERNEL  : [    8.588004] =============gsl_load_fw end==============
06-05 13:01:57.819   142   142 I KERNEL  : [    8.739781] [GSLX680] End gsl_ts_probe

In this example the FW file is: I101_GSL3692_8001280_GG_FC_FC101S123

• Extract the FW with the modified fw_extractor script (from: https://github.com/onitake/gsl-firmware) You can use a portion of file name to search the correct FW Ex: fw_extractor gslx68x_ts.ko GSL3692_8001280_GG_FC

- Create fw with tools (from: https://github.com/onitake/gsl-firmware)
fwtool -c I101_GSL3692_8001280_GG_FC_FC101S123.fw -w 1500 -h 2000 -t 10 -f track,swap,xflip silead_ts.fw

6. Rotate Screen

• Use: https://github.com/hiperiondev/kded_rotation

OLD (NOT RECOMENDED)

• Use RotateScreen/rotate_desktop.sh script (modified from: https://gist.github.com/mildmojo/48e9025070a2ba40795c)

7. Side connector

• USB OTG ?

8. VA-API

• libva-intel-driver libva-intel-hybrid-driver libva-utils libva-v4l2-request libva-vdpau-driver

vainfo: VA-API version: 1.7 (libva 2.7.0.pre1)
vainfo: Driver version: Intel i965 driver for Intel(R) Bay Trail - 2.4.1
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Simple            : VAEntrypointEncSlice
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointEncSlice
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileH264StereoHigh         : VAEntrypointVLD
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileNone                   : VAEntrypointVideoProc
      VAProfileJPEGBaseline           : VAEntrypointVLD

9. Sound

• add to /etc/modprobe.d/blacklist.conf:

blacklist snd_hdmi_lpe_audio

Works but saturate.

10. Others

• Identify ACPI devices which are not handled by the kernel : their name is not overriden by a human-friendly name. Some works with drivers

find /sys/devices/platform -name name -printf "%p\t" -exec cat {} ;

/sys/devices/platform/INT0002:00/wakeup/wakeup20/name           INT0002:00
/sys/devices/platform/80860F41:00/i2c-0/i2c-SMB0349:00/name     SMB0349:00
/sys/devices/platform/80860F41:00/i2c-0/i2c-SMSC3750:00/name    SMSC3750:00
/sys/devices/platform/80860F41:00/i2c-0/i2c-MAX17047:00/name    MAX17047:00
/sys/devices/platform/80860F41:00/i2c-0/i2c-INBC0000:00/name    INBC0000:00
/sys/devices/platform/80860F41:00/i2c-0/i2c-TBQ24296:00/name    TBQ24296:00
/sys/devices/platform/80860F41:03/i2c-3/i2c-MSSL1680:00/name    MSSL1680:00
/sys/devices/platform/80860F41:03/i2c-3/i2c-VBUS8622:00/name    VBUS8622:00
/sys/devices/platform/80860F41:01/i2c-1/i2c-10EC5640:00/name    10EC5640:00

From: Table of ACPI/PNP _HID/_CID values (Intel Corp)
{"INT0002",     "Virtual GPIO Controller"}
{"SMB0349",     "Charger"}
{"SMSC3750",    "SMSC 3750 USB MUX"}
{"MAX17047",    "Fuel Gauge Controller"}
{"INBC0000",    "GPIO Expander"}
{"TBQ24296",    "Charger"}
{"10EC5640",    "Realtek I2S Audio Codec"}
MSSL1680: silead mssl1680 touchscreen
VBUS8622 ??? (Maybe camera)

11. Troubleshooting

• If use new kernels may be boots on black screen. Try this flags on kernel:

efi=debug earlyprintk=efi,keep