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Author Topic: Asus T101HA Transformer brightness and webcam problems.  (Read 198 times)

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Offline Richard Chancellor

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Asus T101HA Transformer brightness and webcam problems.
« on: October 13, 2018, 07:09:03 pm »
Hello everyone I am a newbie  in the Linux world, and I have two problems with that netbook I mentioned before.
The first one is the webcam, for example guvcview is not detecting the webcam and consequently Skype doesn't work.
Second issue is the brightness that doesn't work.
The brightness slider works if I right-click the power manager icon in the system tray, but without effects not dim light nor increase of the brightness.
I will add some screenshots to clarify what I already did about the brightness.
I didn't touched the webcam problem because only few days ago I installed Peppermint 9 OS.
I would like to know if someone else has  had the same problems?
Could you please let me know if you have the solution for these problems? Thank you in advance.

Code: [Select]
On-line CPU(s) list: 0-3
Thread(s) per core:  1
Core(s) per socket:  4
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               76
Model name:          Intel(R) Atom(TM) x5-Z8350  CPU @ 1.44GHz
Stepping:            4
CPU MHz:             538.808
CPU max MHz:         1920.0000
CPU min MHz:         480.0000
BogoMIPS:            2880.00
Virtualization:      VT-x
L1d cache:           24K
L1i cache:           32K
L2 cache:            1024K
NUMA node0 CPU(s):   0-3
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology tsc_reliable nonstop_tsc cpuid aperfmperf tsc_known_freq 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 epb pti tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep erms dtherm ida arat


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« Last Edit: October 14, 2018, 02:47:29 am by AndyInMokum, Reason: encapsulating with [/code] »

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #1 on: October 13, 2018, 07:23:15 pm »
Hi Richard and welcome to the forum, I'll get onto these first thing tomorrow but I'm afraid I'm off to bed now.

Meanwhile, can you post the output from:
Code: [Select]
lsusb
« Last Edit: October 13, 2018, 07:25:46 pm by PCNetSpec »
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Offline Richard Chancellor

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #2 on: October 13, 2018, 07:27:51 pm »
Hi Richard and welcome to the forum, I'll get onto these first thing tomorrow but I'm afraid I'm off to bed now.
Don't worry enjoy your weekend. I live in Canada we have five hours of difference.
Take your time and keep in touch.

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Offline AndyInMokum

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #3 on: October 13, 2018, 08:08:39 pm »
Hi Richard, a big welcome to the Peppermint Forum.  It's very nice to meet you.  New Linux user are always welcome here.  There's a mountain of experienced users here.  So don't be shy about asking questions  ;).

I need to advise you, We are no longer accepting terminal screenshots as feedback unless there is no other option.  The links to screenshots are too often removed, or end up broken.  This renders the whole thread useless for future inquiries and unfortunately, a complete waste of time for the devs helping out.  Could you please rerun the terminal commands?  It is very easy to copy and paste the outputs into the forum editor.  You can do this by highlighting the area to be copied by holding down the left mouse button while dragging the mouse.  Use the copy function on the right mouse click.  Paste the contents into the forum editor using the paste function on the right mouse click.  To preserve the original format, please make sure you encapsulate the outputs with the, # Insert Code function.  This is located above the  :-[ Embarrassed emoticon in the forum editor.  For extra long outputs, you may use the Sp Spoiler function instead.  This is located above the  :'( Cry emoticon in the forum editor.  To post the outputs from text files, you may use the, Insert Quote function.  This is located above the :-X Lips Sealed emoticon in the forum editor.  If it the outputs are from another computer in your network.  Please copy the outputs to a text file.  These can be saved to a thumb drive and then transferred to forum editor.  The appropriate adjustments must to be made before we can proceed with the thread.  Remember we're trying to help you and in doing so, we hope to help others in the future.  Your efforts are very much appreciated.   Many thanks for your cooperation and  understanding  ;).
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Offline Richard Chancellor

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #4 on: October 13, 2018, 10:35:35 pm »
Hi Richard, a big welcome to the Peppermint Forum.  It's very nice to meet you.  New Linux user are always welcome here.  There's a mountain of experienced users here.  So don't be shy about asking questions  ;).

I need to advise you, We are no longer accepting terminal screenshots as feedback unless there is no other option.  The links to screenshots are too often removed, or end up broken.  This renders the whole thread useless for future inquiries and unfortunately, a complete waste of time for the devs helping out.  Could you please rerun the terminal commands?  It is very easy to copy and paste the outputs into the forum editor.  You can do this by highlighting the area to be copied by holding down the left mouse button while dragging the mouse.  Use the copy function on the right mouse click.  Paste the contents into the forum editor using the paste function on the right mouse click.  To preserve the original format, please make sure you encapsulate the outputs with the, # Insert Code function.  This is located above the  :-[ Embarrassed emoticon in the forum editor.  For extra long outputs, you may use the Sp Spoiler function instead.  This is located above the  :'( Cry emoticon in the forum editor.  To post the outputs from text files, you may use the, Insert Quote function.  This is located above the :-X Lips Sealed emoticon in the forum editor.  If it the outputs are from another computer in your network.  Please copy the outputs to a text file.  These can be saved to a thumb drive and then transferred to forum editor.  The appropriate adjustments must to be made before we can proceed with the thread.  Remember we're trying to help you and in doing so, we hope to help others in the future.  Your efforts are very much appreciated.   Many thanks for your cooperation and  understanding  ;).
Thank you so much for welcoming me. I will follow in the future your suggestions and sorry about that inconvenient. Enjoy your weekend AndyInMokum.

Sent from my LG-D852 using Tapatalk


Offline Richard Chancellor

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #5 on: October 13, 2018, 11:01:42 pm »
Hi Richard and welcome to the forum, I'll get onto these first thing tomorrow but I'm afraid I'm off to bed now.

Meanwhile, can you post the output from:
Code: [Select]
lsusb
Hi Richard and welcome to the forum, I'll get onto these first thing tomorrow but I'm afraid I'm off to bed now.
Don't worry enjoy your weekend. I live in Canada we have five hours of difference.
Take your time and keep in touch.


Sent from my SM-T310 using Tapatalk
« Last Edit: October 13, 2018, 11:03:19 pm by Richard Chancellor »

Offline Richard Chancellor

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #6 on: October 13, 2018, 11:03:51 pm »
 ;) ;) If i did some error regarding the policy of the forum please do not hesitate to tell me what is the mistake.
You are my first forum guys sorry about that.  :'(

Code: [Select]
asus@asus-T101HA ~ $ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 0b05:183d ASUSTek Computer, Inc.
Bus 001 Device 003: ID 13d3:3501 IMC Networks
Bus 001 Device 002: ID 062a:4101 Creative Labs Wireless Keyboard/Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
asus@asus-T101HA ~ $
« Last Edit: October 14, 2018, 02:37:13 am by AndyInMokum, Reason: encapsulating with [/code] »

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #7 on: October 14, 2018, 02:45:48 am »
Hi Richard, how's it going :) ?  I see you're having trouble encapsulating terminal outputs.   Don't worry, we've all been there  ;D.   I've fixed it for you  ;).  Try this the next time  :).  After you've pasted the output to the forum editor.  Highlight the output by placing the mouse cursor at the beginning of the output.  Depress the left mouse button and hold.  Drag the cursor to the end of the output and release the left mouse button.  The output will now be highlighted.  In the forum editing options, select the # and left click on it.  This function is located above the  :-[ (Embarrassed) emoticon.   Your terminal output will now be encapsulated with the Code function.  You can check how your post will look in the forum by clicking the, Preview button.  This is located at bottom left side of the forum editor.   Alternatively, you can use the keystrokes Ctrl+P.  I hope this helps  ;).
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Offline Richard Chancellor

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #8 on: October 14, 2018, 10:32:40 am »
 :) Thank you very much for helping me.
I hope the command line i wrote on the terminal could be useful to understanding why the webcam and the brightness doesn't work.
Could be maybe because this Netbook it is really a new brand for Peppermint?
Maybe for that reason on the kernels doesn't incorporated the drivers for the webcam and the brightness?
For me it is a mystery :-[

Code: [Select]
asus@asus-T101HA ~ $ inxi -Fxz
System:    Host: asus-T101HA Kernel: 4.15.0-36-generic x86_64 bits: 64 gcc: 7.3.0
           Desktop: N/A Distro: Peppermint Nine
Machine:   Device: un-determined System: ASUSTeK product: T101HA v: 1.0 serial: N/A
           Mobo: ASUSTeK model: T101HA v: 1.0 serial: N/A
           UEFI: American Megatrends v: T101HA.303 date: 01/24/2017
Battery    BATC: charge: 11.2 Wh 51.4% condition: 21.8/31.6 Wh (69%)
           model: Intel SR 1 SR Real status: Discharging
CPU:       Quad core Intel Atom x5-Z8350 (-MCP-)
           arch: Airmont rev.4 cache: 1024 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 11520
           clock speeds: max: 1920 MHz 1: 584 MHz 2: 693 MHz 3: 1883 MHz
           4: 1840 MHz
Graphics:  Card: Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers
           bus-ID: 00:02.0
           Display Server: x11 (X.Org 1.19.6 )
           drivers: modesetting (unloaded: fbdev,vesa)
           Resolution: 800x1280@60.10hz
           OpenGL: renderer: Mesa DRI Intel HD Graphics (Cherrytrail)
           version: 4.5 Mesa 18.0.5 Direct Render: Yes
Audio:     Card-1 Intel HDMI/DP LPE Audio driver: HdmiLpeAudio
           Card-2 chtrt5645 driver: chtrt5645
           Sound: Advanced Linux Sound Architecture v: k4.15.0-36-generic
Network:   Card: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter
           driver: ath10k_pci bus-ID: 01:00.0
           IF: wlp1s0 state: up mac: <filter>
Drives:    HDD Total Size: NA (-)
           ID-1: /dev/mmcblk0 model: N/A size: 31.3GB
           ID-2: /dev/mmcblk1 model: N/A size: 127.9GB
Partition: ID-1: / size: 29G used: 13G (49%) fs: ext4 dev: /dev/mmcblk0p2
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 42.0C mobo: N/A
           Fan Speeds (in rpm): cpu: 0
Info:      Processes: 219 Uptime: 1:05 Memory: 1240.5/1825.9MB
           Init: systemd runlevel: 5 Gcc sys: N/A
           Client: Shell (bash 4.4.191) inxi: 2.3.56
asus@asus-T101HA ~ $

Code: [Select]
asus@asus-T101HA ~ $ sudo lshw -C video
[sudo] password for asus:
  *-display                 
       description: VGA compatible controller
       product: Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 36
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:120 memory:90000000-90ffffff memory:80000000-8fffffff ioport:f000(size=64) memory:c0000-dffff
asus@asus-T101HA ~ $
« Last Edit: October 14, 2018, 11:29:14 am by Richard Chancellor »

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #9 on: October 14, 2018, 12:16:07 pm »
Okay for the webcam, can you run:
Code: [Select]
dmesg > ~/Desktop/dmesg.txt
you'll then find a file on your desktop called "dmesg.txt" .. can you host that file online somewhere such as
http://www.tinyupload.com/
then provide us with a link so we can download it.



And now let's try adding a kernel boot parameter for the brightness and see if it makes a difference....

Run:
Code: [Select]
sudo xed /etc/default/grub
find the line that reads
Code: [Select]
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
and change it to
Code: [Select]
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video.use_native_backlight=1"
SAVE the changes and exit the text editor.

Back in the terminal run:
Code: [Select]
sudo update-grub
and when that finsihes, REBOOT to test.
WARNING: You are logged into reality as 'root' .. logging in as 'insane' is the only safe option.

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Offline Richard Chancellor

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #10 on: October 14, 2018, 12:29:39 pm »
That's the link for downloading the file /home/asus/Desktop/dmesg.tx

http://s000.tinyupload.com/index.php?file_id=05798872092145134773

I let you know the result about the brightness problem.

Thank you always for your help, effort and time you are dedicating to me.
 
My best regards and keep in touch.

Offline Richard Chancellor

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #11 on: October 14, 2018, 12:42:38 pm »
I did exactly your suggestion about the Brightness but without solve that problem.
Sorry if I am giving you a bad new.

Code: [Select]
# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video.use_native_backlight=1"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"
« Last Edit: October 14, 2018, 12:45:09 pm by Richard Chancellor »

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #12 on: October 14, 2018, 01:31:05 pm »
Okay let's first undo that...

run
Code: [Select]
sudo xed /etc/default/grub
find the line
Code: [Select]
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video.use_native_backlight=1"
and change it back to
Code: [Select]
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
SAVE the file and exit the text editor

Back in the terminal run:
Code: [Select]
sudo update-grub



Now can you REBOOT .. then post the output from:
Code: [Select]
ls /sys/class/backlight/



The good news is the backlight may be fixable, the bad news is I don't think the webcam is (at least currently) .. it would seem your webcam is an OV2680 (Atom ISP - Image Signalling Processor) device, and though there was some work going on with the atomisp driver in staging to make it work, not much has happened in the last few months because Intel abandoned the driver.



These links are for my future reference
https://itsfoss.com/fix-brightness-ubuntu-1310/
and
https://drive.google.com/file/d/1VTzciobFlp7nO2A_M7RNoqYajN8c9AgR/view
« Last Edit: October 14, 2018, 01:36:33 pm by PCNetSpec »
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Offline Richard Chancellor

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #13 on: October 14, 2018, 01:47:18 pm »
I am posting the result of the command line:

Code: [Select]
ls /sys/class/backlight/

Code: [Select]
asus@asus-T101HA ~ $ ls /sys/class/backlight/
acpi_video0  acpi_video2  acpi_video4  acpi_video6
acpi_video1  acpi_video3  acpi_video5  acpi_video7
asus@asus-T101HA ~ $ sudo ls /sys/class/backlight/
[sudo] password for asus:
acpi_video0  acpi_video2  acpi_video4  acpi_video6
acpi_video1  acpi_video3  acpi_video5  acpi_video7
asus@asus-T101HA ~ $

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Re: Asus T101HA Transformer brightness and webcam problems.
« Reply #14 on: October 14, 2018, 06:04:24 pm »
Okay, I wasn't expecting that :-\

Run:
Code: [Select]
sudo xed /etc/default/grub
find the line that reads
Code: [Select]
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
and change it to
Code: [Select]
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash video.use_native_backlight=1"
SAVE the changes and exit the text editor.

Back in the terminal run:
Code: [Select]
sudo update-grub
and when that finishes, REBOOT.

Once rebooted, post the output from;
Code: [Select]
ls /sys/class/backlight/
again
WARNING: You are logged into reality as 'root' .. logging in as 'insane' is the only safe option.

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