What touch screen does the Nextbook 8 tablet Windows 8.1 use?

[eccerr0r]

I guess this is a long shot but I'm not sure where else to find this data.

Anyone know what touch screen the eFun Nextbook 8 Windows 8.1 tablet uses?

I'm trying to install Linux on this tablet and haven't the vaguest idea what driver to get and install. All of the in-kernel devices don't seem to work, nor the Goodix Touch which is what the eFun Nextbook 10 Windows uses.

If someone has Windows 8.1 running, it'd be great if someone could go into control panel/device manager and pick up the touch screen sensor manufacturer/model/ACPI ID on this machine?

Thanks in advance!

[stj]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

if it's ARM based then it will have the controller integrated into the cpu - so you need to i.d. the cpu.

[goontron]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

if it's ARM based then it will have the controller integrated into the cpu - so you need to i.d. the cpu.

Intel® ATOM™ Quad-Core Z3735G Processor / 1.8GHZ (2M Cache, up to 1.83 GHz)

http://nextbookusa.com/productdetail.php?product_id=22

install lshw on linux, run it and paste the output.

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

I had forgotten about lshw, but unfortunately it only reported stuff like the CPU, RAM, USB HCI, mounted media, stuff in lspci,

The only thing that stuck out was
*-power UNCLAIMED
description: OEM_Define1
product: OEM_Define5
vendor: OEM_Define2
physical id: 2
version: OEM_Define6
serial: OEM_Define3
capacity: 42mWh

Alas this does not say anything about the touchscreen. And It didn't even report anything about the eMMC storage and microSD card on the board which I know about since they're working. According to lshw, the only media it has is the SD card I have unmounted connected through USB. Somehow it's running lshw with no root partition (ok, maybe it thinks it's running in an initrd...)

[edit]

Oh and yes this is an Atom based SOC. I hear the Mooresfield older Intel SoC has a resistive touch panel sensor, but I think this has a capacitive sensor and the Intel touch panel driver didn't work either.

Other devices that lshw missed:

I think this unit has:
GPS (maybe), ALS (Ambient Light Sensor, maybe), Accelerometer (definite), two cameras (definite), etc. amongst the touch panel, battery charger circuit, battery fuel gauge that don't show up either. I'm not sure if this thing has proper USB OTG support and its related USB mux, but at least it let me hook up external USB peripherals.

[stj]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

"cat /proc/cpuinfo"

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

Well, if you're really that interested, this is 1 of 4, but I highly doubt the touch panel is integrated in the SoC.

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 55
model name : Intel(R) Atom(TM) CPU Z3735G @ 1.33GHz
stepping : 8
microcode : 0x81c
cpu MHz : 498.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fdiv_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 11
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes rdrand lahf_lm 3dnowprefetch ida arat epb dtherm tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms
bugs :
bogomips : 2663.33
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

[stj]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

cams, gyro etc are all going into the cpu directly.

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

Touch screen is still a mystery... I can deal without the cameras, gyro, etc. not working, but no touch screen? I think I bought a brick.

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

For completeness and nothing obviously the touchscreen,

lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 005: ID 5136:4678
Bus 001 Device 004: ID 046d:c309 Logitech, Inc. Internet Keyboard
Bus 001 Device 003: ID 04f3:0230 Elan Microelectronics Corp. 3D Optical Mouse
Bus 001 Device 002: ID 05e3:0606 Genesys Logic, Inc. USB 2.0 Hub / D-Link DUB-H4 USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

(BTW, 5136:4678 is my USB to SD card reader)

lspci:
00:00.0 Host bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx Series SoC Transaction Register (rev 0f)
00:02.0 VGA compatible controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display (rev 0f)
00:14.0 USB controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series USB xHCI (rev 0f)
00:1a.0 Encryption controller: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Trusted Execution Engine (rev 0f)
00:1f.0 ISA bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Power Control Unit (rev 0f)

Windows still seems like the best bet...

[EDIT]
Short form LSHW
H/W path Device Class Description
===============================================
system M890 (Type1 - SKU0)
/0 bus Type2 - Board Product Name
/0/0 memory 64KiB BIOS
/0/4 processor Intel(R) Atom(TM) CPU Z3735G @ 1.33GHz
/0/4/8 memory 32KiB L1 cache
/0/4/9 memory 1MiB L2 cache
/0/4/0.1 processor Logical CPU
/0/4/0.2 processor Logical CPU
[logical 0x3..0xf logical CPUs deleted for brevity]
/0/4/0.10 processor Logical CPU
/0/7 memory 24KiB L1 cache
/0/14 memory 1GiB System Memory
/0/14/0 memory 1GiB SODIMM DDR3 Synchronous 1333 MHz (0.8 n
/0/14/1 memory SODIMM DDR3 Synchronous 1333 MHz (0.8 ns) [e
/0/100 bridge Atom Processor Z36xxx/Z37xxx Series SoC Tran
/0/100/2 display Atom Processor Z36xxx/Z37xxx Series Graphics
/0/100/14 bus Atom Processor Z36xxx/Z37xxx Series USB xHCI
/0/100/1a generic Atom Processor Z36xxx/Z37xxx Series Trusted
/0/100/1f bridge Atom Processor Z36xxx/Z37xxx Series Power Co
/0/1 scsi0 storage
/0/1/0.0.0 /dev/sda disk 998MB SCSI Disk
/0/1/0.0.0/1 /dev/sda1 volume 951MiB Windows FAT volume
/1 power SR Real Battery
/2 power OEM_Define5
/3 wlan0 network Wireless interface

[goontron]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

is xorg-xinput installed?

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

I think it's installed by default now. Triggering evdev, in xorg.log it only reports the USB keyboard, USB mouse, and one more device which I think is a weirdness in my USB keyboard as it has a "mouse" scroll wheel on it.

I'm building Linux 3.19-rc2 right now which has the Goodix driver (that I don't think my tablet uses, but the Nextbook 10" does). And GRR... head of the rtl8723bs driver repo doesn't compile anymore... glad I still have an old copy that still compiles. Oddly enough it seems that head backtracked to an older method *shrug* weird...

[goontron]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

I think it's installed by default now. Triggering evdev, in xorg.log it only reports the USB keyboard, USB mouse, and one more device which I think is a weirdness in my USB keyboard as it has a "mouse" scroll wheel on it.

I'm building Linux 3.19-rc2 right now which has the Goodix driver (that I don't think my tablet uses, but the Nextbook 10" does). And GRR... head of the rtl8723bs driver repo doesn't compile anymore... glad I still have an old copy that still compiles. Oddly enough it seems that head backtracked to an older method *shrug* weird...

this is going to sound crazy, but download and run android x86.
android-x86.org it might work. if not, well its probably not linux compatible yet.

[ddscentral]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

For Bay Trail SoCs, touchscreen should be connected to the i2c bus. It should be listed in
/sys/bus/i2c/devices/

this is going to sound crazy, but download and run android x86.
android-x86.org it might work. if not, well its probably not linux compatible yet.

Android x86 standard kernel (3.10) isn't compatible with Bay Trail. There's a version 3.18 kernel which works but has problems with SD controller.

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

Yes, they are very likely IIC bus. Or rather busses, it appears many devices are on their own IIC busses. However IIC devices do not show up unless a driver knows about them - IIC is not "in-band" pnp and hence there's really no way to poll IIC (safely) for the device identity (on the IIC bus, is legal to make "reads" have a side effect.)

So, still, anyone know what the touch screen chip is on this tablet? I ended up running down this road and just as the topic says, I think having a working Windows install would be the easiest way to find out, short of having a schematic (dang Yi-Fang Digital for actually prohibiting FCC to show a block diagram or schematic when they applied for FCC testing) or perhaps cracking the case... unless there's some other tool out there that can probe for the chip?

[goontron]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

For Bay Trail SoCs, touchscreen should be connected to the i2c bus. It should be listed in
/sys/bus/i2c/devices/

I would have no idea. I work on Intel workstations and SunSPARC equipment. Non of this silly embedded nonsence.

Android x86 standard kernel (3.10) isn't compatible with Bay Trail. There's a version 3.18 kernel which works but has problems with SD controller.

I was assuming he would get the latest build with the new kernel. I also knew about the SD issue, but I was having him do it for debug purposes only.

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

Grabbed the Android-X86 (got the 1/1/2015 build). It's booting... and booting... and booting...
How long does normally take to get past the Welcome screen on first boot?

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

Aaaaaahhhh Android-x86 crashed. The 512MB distribution installed on a SD card made my tablet's 1GB run out of memory and hit the OOM-killer!

*Sigh*

[ddscentral]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

Yes, they are very likely IIC bus. Or rather busses, it appears many devices are on their own IIC busses. However IIC devices do not show up unless a driver knows about them - IIC is not "in-band" pnp and hence there's really no way to poll IIC (safely) for the device identity (on the IIC bus, is legal to make "reads" have a side effect.)

So, still, anyone know what the touch screen chip is on this tablet? I ended up running down this road and just as the topic says, I think having a working Windows install would be the easiest way to find out, short of having a schematic (dang Yi-Fang Digital for actually prohibiting FCC to show a block diagram or schematic when they applied for FCC testing) or perhaps cracking the case... unless there's some other tool out there that can probe for the chip?

Bay Trail IIC devices are enumerated via ACPI, and Linux should be able to see them even without a working driver.

Could you post the output of:
ls /sys/bus/i2c/devices/

Aaaaaahhhh Android-x86 crashed. The 512MB distribution installed on a SD card made my tablet's 1GB run out of memory and hit the OOM-killer!

*Sigh*

Strange. On my baytrail tablet (with 2GB RAM), Android uses ~500MB with several background apps running. It should not crash with 1GB.

[eccerr0r]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

My /sys/bus/i2c/devices has 8 objects show up, from i2c-0 to 7...
I wonder if there's other i2c busses that haven't been discovered for whatever reason...

[GaryCole]

Re: What touch screen does the Nextbook 8 tablet Windows 8.1 use?

Touch screen is still a mystery... I can deal without the cameras, gyro, etc. not working, but no touch screen? I think I bought a brick.

The same for me. My wife asked me to buy here one, but I can't cgoose the good one