Plato: A document reader for PDF, ePUB, DjVu, etc. - Page 8

gilali · 03-17-2018, 02:35 PM

Click on "start plato"
screen is flashing once
going back to ksm
Disconnected from wifi suddenly

crash.log:

Code:

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { repr: Os { code: 6, message: "No such device or address" } }', /checkout/src/libco
stack backtrace:
   0: <unknown>
   1: <unknown>
   2: <unknown>
   3: <unknown>
   4: <unknown>
   5: <unknown>
   6: <unknown>
   7: <unknown>
   8: <unknown>
   9: <unknown>
  10: <unknown>
  11: <unknown>
  12: <unknown>
  13: <unknown>
  14: <unknown>
  15: <unknown>
  16: <unknown>
  17: <unknown>
  18: main
  19: __libc_start_main

baskerville · 03-17-2018, 04:04 PM

Quote:

Originally Posted by gilali

Code:

stack backtrace:
   0: <unknown>
   1: <unknown>
   2: <unknown>
    ᠁
  17: <unknown>
  18: main
  19: __libc_start_main

I guess we can't get a useful backtrace from a stripped release build.

Could you please try with the attached unstripped debug build?

(You need to replace the plato binary that lives in /mnt/onboard/.adds/plato with the one in the archive.)

Thank you for your diligence.

gilali · 03-18-2018, 03:48 AM

You're welcome
Starting plato debug from KSM :

Spoiler:

Code:

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { repr: Os { code: 6, message: "No such device or address" } }', /checkout/src/libco
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::print
             at /checkout/src/libstd/sys_common/backtrace.rs:68
             at /checkout/src/libstd/sys_common/backtrace.rs:57
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/panicking.rs:381
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:397
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:577
   5: std::panicking::begin_panic
             at /checkout/src/libstd/panicking.rs:538
   6: std::panicking::begin_panic_fmt
             at /checkout/src/libstd/panicking.rs:522
   7: rust_begin_unwind
             at /checkout/src/libstd/panicking.rs:498
   8: core::panicking::panic_fmt
             at /checkout/src/libcore/panicking.rs:71
   9: core::result::unwrap_failed
             at /checkout/src/libcore/macros.rs:23
  10: <core::result::Result<T, E>>::unwrap
             at /checkout/src/libcore/result.rs:782
  11: plato::frontlight::natural::NaturalFrontlight::set
             at src/frontlight/natural.rs:90
  12: plato::frontlight::natural::NaturalFrontlight::update
             at src/frontlight/natural.rs:112
  13: <plato::frontlight::natural::NaturalFrontlight as plato::frontlight::Frontlight>::set_intensity
             at src/frontlight/natural.rs:121
  14: plato::app::run
             at src/app.rs:142
  15: plato::main
             at /home/ice/projects/plato/<quick_main macros>:4
  16: std::rt::lang_start::{{closure}}
             at /checkout/src/libstd/rt.rs:74
  17: std::panicking::try::do_call
             at /checkout/src/libstd/rt.rs:59
             at /checkout/src/libstd/panicking.rs:480
  18: __rust_maybe_catch_panic
             at /checkout/src/libpanic_unwind/lib.rs:101
  19: std::rt::lang_start_internal
             at /checkout/src/libstd/panicking.rs:459
             at /checkout/src/libstd/panic.rs:365
             at /checkout/src/libstd/rt.rs:58
  20: std::rt::lang_start
             at /checkout/src/libstd/rt.rs:74
  21: main
  22: __libc_start_main

Good luck

baskerville · 03-18-2018, 05:22 AM

Quote:

Originally Posted by gilali

Code:

  11: plato::frontlight::natural::NaturalFrontlight::set
             at src/frontlight/natural.rs:90
  12: plato::frontlight::natural::NaturalFrontlight::update
             at src/frontlight/natural.rs:112
  13: <plato::frontlight::natural::NaturalFrontlight as plato::frontlight::Frontlight>::set_intensity
             at src/frontlight/natural.rs:121
  14: plato::app::run
             at src/app.rs:142
  15: plato::main
             at /home/ice/projects/plato/<quick_main macros>:4

Thanks, that's helpful and strange: it would seem that lm3630a_led might not be the correct red led.

Could you run and provide the output of the following commands:

Code:

ls -d /sys/class/backlight/*
ls /sys/class/backlight/*/color

on your Aura H₂O 2?

I'm asking this because I noticed that, on the Aura ONE, I have 5 lm3630a directories and the ones that correspond to the white/red/green lights do not hold a color file. And if I try to write something to the brightness file of one of the other directories, it fails with: sh: write error: No such device or address.

gilali · 03-18-2018, 07:30 AM

Code:

12:20 root@koboH2O2:/mnt/onboard/.adds/koreader> ls -d /sys/class/backlight/*
/sys/class/backlight/lm3630a_led      /sys/class/backlight/lm3630a_leda     /sys/class/backlight/lm3630a_ledb     /sys/class/backlight/mxc_msp430_fl.0
12:20 root@koboH2O2:/mnt/onboard/.adds/koreader> ls /sys/class/backlight/*/color
/sys/class/backlight/lm3630a_led/color

Quote:

Originally Posted by baskerville

on your Aura H₂O 2?

Yes I confirm, H₂O edition 2

baskerville · 03-18-2018, 09:17 AM

Quote:

Originally Posted by gilali

Code:

12:20 root@koboH2O2:/mnt/onboard/.adds/koreader> ls -d /sys/class/backlight/*
/sys/class/backlight/lm3630a_led      /sys/class/backlight/lm3630a_leda     /sys/class/backlight/lm3630a_ledb     /sys/class/backlight/mxc_msp430_fl.0
12:20 root@koboH2O2:/mnt/onboard/.adds/koreader> ls /sys/class/backlight/*/color
/sys/class/backlight/lm3630a_led/color

That's unfortunate, it means that lm3630a_led cannot be the correct led.

The following command:

Code:

echo 0 > /sys/class/backlight/lm3630a_led/brightness

should fail, can you confirm that?

Could you provide the output of the following command:

Code:

lsof | grep nickel

while Nickel is running?

gilali · 03-18-2018, 03:22 PM

from ksm :

Code:

20:16 root@koboH2O2:/mnt/onboard/.adds/koreader> echo 0 > /sys/class/backlight/lm3630a_led/brightness
sh: write error: No such device or address
20:16 root@koboH2O2:/mnt/onboard/.adds/koreader> lsof | grep nickel
20:17 root@koboH2O2:/mnt/onboard/.adds/koreader>

From nickel :

Spoiler:

Code:

20:18 root@koboH2O2:/mnt/onboard/.adds/koreader> echo 0 > /sys/class/backlight/lm3630a_led/brightness
sh: write error: No such device or address
20:18 root@koboH2O2:/mnt/onboard/.adds/koreader> lsof | grep nickel
25802   /bin/busybox    /adds/kbmenu/onstart/start_nickel.sh
25873   /usr/local/Kobo/nickel  /dev/null
25873   /usr/local/Kobo/nickel  /dev/console
25873   /usr/local/Kobo/nickel  /dev/console
25873   /usr/local/Kobo/nickel  /dev/fb0
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  pipe:[10576]
25873   /usr/local/Kobo/nickel  pipe:[10576]
25873   /usr/local/Kobo/nickel  socket:[10579]
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  /dev/ntx_io
25873   /usr/local/Kobo/nickel  /tmp/nickel-hardware-status
25873   /usr/local/Kobo/nickel  /dev/input/event0
25873   /usr/local/Kobo/nickel  /dev/urandom
25873   /usr/local/Kobo/nickel  /mnt/onboard/.kobo/KoboReader.sqlite
25873   /usr/local/Kobo/nickel  /mnt/onboard/.kobo/KoboReader.sqlite-wal
25873   /usr/local/Kobo/nickel  /mnt/onboard/.kobo/KoboReader.sqlite-shm
25873   /usr/local/Kobo/nickel  socket:[10656]
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  /mnt/onboard/.kobo/BookReader.sqlite
25873   /usr/local/Kobo/nickel  /mnt/onboard/.kobo/BookReader.sqlite-wal
25873   /usr/local/Kobo/nickel  /mnt/onboard/.kobo/BookReader.sqlite-shm
25873   /usr/local/Kobo/nickel  socket:[10665]
25873   /usr/local/Kobo/nickel  /dev/urandom
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  /mnt/onboard/.kobo/KoboReader.sqlite
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  /dev/input/event1
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  socket:[10935]
25873   /usr/local/Kobo/nickel  anon_inode:[eventfd]
25873   /usr/local/Kobo/nickel  socket:[10991]
20:18 root@koboH2O2:/mnt/onboard/.adds/koreader>

baskerville · 03-18-2018, 04:26 PM

Quote:

Code:

25873   /usr/local/Kobo/nickel  /dev/ntx_io

This means that nickel sets the frontlight through ioctl calls and not by writing to the sysfs interface.

I'll post instructions on how to capture the relevant ioctl calls.

baskerville · 03-18-2018, 04:58 PM

In the meantime, could you try this script:

Code:

#! /bin/sh

BKL=/sys/class/backlight
LM="$BKL"/lm3630a_led

echo 50 > "$BKL"/mxc_msp430_fl.0/brightness

echo 0 > "${LM}a"/brightness
echo 0 > "${LM}a"/bl_power

echo 150 > "${LM}b"/brightness
echo 31 > "${LM}b"/bl_power

sleep 3

echo 150 > "${LM}a"/brightness
echo 31 > "${LM}a"/bl_power

echo 0 > "${LM}b"/brightness
echo 0 > "${LM}b"/bl_power

sleep 3

echo 0 > "${LM}a"/brightness
echo 0 > "${LM}a"/bl_power

echo 0 > "$BKL"/mxc_msp430_fl.0/brightness

?

And provide the perceived light tint for each of the two frontlight states that it triggers?

baskerville · 03-19-2018, 05:43 AM

Here are the instructions to capture the ioctl calls emitted by Nickel:

Put the attached strace binary somewhere on your device.

While Nickel is running, launch strace with:

Code:

./strace -t -y -o strace.log -p $(pidof nickel) -e trace=ioctl

Open the frontlight dialog and:
- Set the brightness to 0 % and the warmth to 0 %.
- Set the brightness to 50 %, and then to 100 %.
- Set the warmth to 50 %.
- Set the brightness to 50%.
- Set the warmth to 100 %.
- Set the brightness to 100 %.
Stop the strace process with ctrl-c and post the output of grep ntx_io strace.log here.

Percents don't need to be exact: you can interpret 0 %, 50 %, and 100 % as near to the beginning, middle, and end of the slider's range.

gilali · 03-19-2018, 07:02 AM

Log is attached here

baskerville · 03-19-2018, 01:05 PM

Quote:

Originally Posted by gilali

Log is attached here

Thanks, I'm a bit puzzled, because the only relevant ioctl calls only have to do with the white light.

Let's go back to the sysfs approach.

Since you mentioned that KOReader's natural light widget was working on the H₂O 2, I'm guessing that, the two actionable lights are enough.

On the Aura ONE, I can control the following lights:

led1b: white.
led1a: red.
ledb: green.
leda: blue.

Since you only have two writable pseudo-file, I suppose that the H₂O 2 might be using a different lightning system which might explain the absence of red/green blotches.

Could you run the attached script on your device?

Your screen should emit two lights that last for 3 seconds each: can you describe the color of those lights?

gilali · 03-19-2018, 01:46 PM

on ksm :
first, orange with full brightness
second : white full brightness
third : no light

baskerville · 03-19-2018, 03:28 PM

Quote:

first, orange with full brightness
second : white full brightness

Thanks, that's great!

One last test: when you run the attached script, do you see a series of oranges of various intensities, or does it start yellow and drifts towards orange?

baskerville · 03-19-2018, 03:57 PM

Here's another debug build that should no longer crash.

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03-19-2018, 01:46 PM	#118
gilali Connoisseur Posts: 74 Karma: 28960 Join Date: Oct 2017 Location: Paris Device: KOBO Libra + H2Ov2 + Aura2	on ksm : first, orange with full brightness second : white full brightness third : no light

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