Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-13 Thread Graham Haddock
What does cpufreq-set -g performance do?
Sounds like it would lock the BBB at max CPU clock speed, or at least, not
let it go down to the lowest speeds.

I found the generic Debian docs on *cpufreq-set*, but not the BBB specific
instruction set and meanings.

--- Graham


On Mon, Jul 13, 2015 at 8:41 AM, Graham Haddock gra...@flexradio.com
wrote:

 OK.
 I took my Rev.C unit (1c:ba:8c:d9:5e:dd) and loaded
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img onto a
 16 GB uSD card.  Unit, power supply and card are trusted.

 Absolutely no changes to the image, just install, boot, run. No updates,
 additions or modifications.
 No cape, only connections are 5V power and Ethernet.
 Times are GMT/UTC. I define the boot completion as the time when systemd
 updates the internal time from the network.

 Initial boot completion: Jul 12 19:12:09
 Autonomous reboot:Jul 13 10:54:19

 This time it took 15 hours for the autonomous reboot to occur. I'll let
 this one keep going, and report.

 --- Graham

 ==

 On Mon, Jul 13, 2015 at 12:13 AM, William Hermans yyrk...@gmail.com
 wrote:

 *(3) System bb4f8e still has 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC
 2015 armv7l GNU/Linux: but cpufreq-set -g performance: no more reboot*


 Interesting . . . If memory serves correctly, that was the fix for an
 older kernel. So possibly older code crept into the newer ?

 On Sun, Jul 12, 2015 at 8:35 PM, 'dl4mea' via BeagleBoard 
 beagleboard@googlegroups.com wrote:

 Results from overnight test:

 I used the worst rebooters for some tests:

 (1) System bb1cf1 got installed with 3.19.3-bone4: *no more reboot*
 uptime
  03:23:37 up 14:50,  1 user,  load average: 0.00, 0.01, 0.05

 (2) System bb6c1f: installed with 4.1.1-ti-r2 #1 SMP PREEMPT Wed Jul 8
 17:03:29 UTC 2015 armv7l GNU/Linux: *2 reboots*
 Jul 13 00:55:17 bb6c1f kernel: [0.00] Booting Linux on physical
 CPU 0x0
 Jul 13 01:51:02 bb6c1f kernel: [0.00] Booting Linux on physical
 CPU 0x0

 (3) System bb4f8e still has 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC
 2015 armv7l GNU/Linux: but cpufreq-set -g performance: *no more reboot*
 uptime
  03:29:57 up  9:01,  1 user,  load average: 0.02, 0.06, 0.05

 As I have to leave for the day, I will let all my systems run for at
 least 12h without changes.
 If then still like this, I will do (1) and (3) on some more devices.

 @RobertCNelson: If you have further suggestions which image to test, let
 me know.

 --- Guenter (dl4mea)

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-13 Thread Graham Haddock
OK.
I took my Rev.C unit (1c:ba:8c:d9:5e:dd) and loaded
bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img onto a
16 GB uSD card.  Unit, power supply and card are trusted.

Absolutely no changes to the image, just install, boot, run. No updates,
additions or modifications.
No cape, only connections are 5V power and Ethernet.
Times are GMT/UTC. I define the boot completion as the time when systemd
updates the internal time from the network.

Initial boot completion: Jul 12 19:12:09
Autonomous reboot:Jul 13 10:54:19

This time it took 15 hours for the autonomous reboot to occur. I'll let
this one keep going, and report.

--- Graham

==

On Mon, Jul 13, 2015 at 12:13 AM, William Hermans yyrk...@gmail.com wrote:

 *(3) System bb4f8e still has 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC
 2015 armv7l GNU/Linux: but cpufreq-set -g performance: no more reboot*


 Interesting . . . If memory serves correctly, that was the fix for an
 older kernel. So possibly older code crept into the newer ?

 On Sun, Jul 12, 2015 at 8:35 PM, 'dl4mea' via BeagleBoard 
 beagleboard@googlegroups.com wrote:

 Results from overnight test:

 I used the worst rebooters for some tests:

 (1) System bb1cf1 got installed with 3.19.3-bone4: *no more reboot*
 uptime
  03:23:37 up 14:50,  1 user,  load average: 0.00, 0.01, 0.05

 (2) System bb6c1f: installed with 4.1.1-ti-r2 #1 SMP PREEMPT Wed Jul 8
 17:03:29 UTC 2015 armv7l GNU/Linux: *2 reboots*
 Jul 13 00:55:17 bb6c1f kernel: [0.00] Booting Linux on physical
 CPU 0x0
 Jul 13 01:51:02 bb6c1f kernel: [0.00] Booting Linux on physical
 CPU 0x0

 (3) System bb4f8e still has 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC
 2015 armv7l GNU/Linux: but cpufreq-set -g performance: *no more reboot*
 uptime
  03:29:57 up  9:01,  1 user,  load average: 0.02, 0.06, 0.05

 As I have to leave for the day, I will let all my systems run for at
 least 12h without changes.
 If then still like this, I will do (1) and (3) on some more devices.

 @RobertCNelson: If you have further suggestions which image to test, let
 me know.

 --- Guenter (dl4mea)

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-13 Thread Robert Nelson
On Mon, Jul 13, 2015 at 8:46 AM, Graham Haddock gra...@flexradio.com wrote:
 What does cpufreq-set -g performance do?
 Sounds like it would lock the BBB at max CPU clock speed, or at least, not
 let it go down to the lowest speeds.

Correct...

 I found the generic Debian docs on cpufreq-set, but not the BBB specific
 instruction set and meanings.

It's a generic kernel interface, nothing bbb specific about it..

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-13 Thread William Hermans
debian@beaglebone:~$ uptime
 11:58:48 up 23:22,  1 user,  load average: 0.22, 0.07, 0.06
debian@beaglebone:~$ uname -a
Linux beaglebone 4.1.0-rc8-bone9 #1 Tue Jun 16 23:45:22 UTC 2015 armv7l
GNU/Linux
debian@beaglebone:~$ cat /etc/dogtag
BeagleBoard.org Debian Image 2015-03-01
debian@beaglebone:~$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
  driver: cpufreq-dt
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 300 us.
  hardware limits: 300 MHz - 1000 MHz
  available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz
  available cpufreq governors: conservative, ondemand, userspace,
powersave, performance
  current policy: frequency should be within 300 MHz and 1000 MHz.
  The governor ondemand may decide which speed to use
  within this range.
  current CPU frequency is 300 MHz.
  cpufreq stats: 300 MHz:0.04%, 600 MHz:0.00%, 800 MHz:0.00%, 1000
MHz:99.96%  (4)

I'll let it idle longer, but pretty sure it will have no problems. This
board is an element14 REVC for what that's worth.

On Mon, Jul 13, 2015 at 6:54 AM, Robert Nelson robertcnel...@gmail.com
wrote:

 On Mon, Jul 13, 2015 at 8:46 AM, Graham Haddock gra...@flexradio.com
 wrote:
  What does cpufreq-set -g performance do?
  Sounds like it would lock the BBB at max CPU clock speed, or at least,
 not
  let it go down to the lowest speeds.

 Correct...

  I found the generic Debian docs on cpufreq-set, but not the BBB specific
  instruction set and meanings.

 It's a generic kernel interface, nothing bbb specific about it..

 Regards,

 --
 Robert Nelson
 https://rcn-ee.com/

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-13 Thread William Hermans
Oh, and in case this might be relevant. The board is powered by USB, with
only ethernet plugged in.

On Mon, Jul 13, 2015 at 12:01 PM, William Hermans yyrk...@gmail.com wrote:

 debian@beaglebone:~$ uptime
  11:58:48 up 23:22,  1 user,  load average: 0.22, 0.07, 0.06
 debian@beaglebone:~$ uname -a
 Linux beaglebone 4.1.0-rc8-bone9 #1 Tue Jun 16 23:45:22 UTC 2015 armv7l
 GNU/Linux
 debian@beaglebone:~$ cat /etc/dogtag
 BeagleBoard.org Debian Image 2015-03-01
 debian@beaglebone:~$ cpufreq-info
 cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
 Report errors and bugs to cpuf...@vger.kernel.org, please.
 analyzing CPU 0:
   driver: cpufreq-dt
   CPUs which run at the same hardware frequency: 0
   CPUs which need to have their frequency coordinated by software: 0
   maximum transition latency: 300 us.
   hardware limits: 300 MHz - 1000 MHz
   available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz
   available cpufreq governors: conservative, ondemand, userspace,
 powersave, performance
   current policy: frequency should be within 300 MHz and 1000 MHz.
   The governor ondemand may decide which speed to use
   within this range.
   current CPU frequency is 300 MHz.
   cpufreq stats: 300 MHz:0.04%, 600 MHz:0.00%, 800 MHz:0.00%, 1000
 MHz:99.96%  (4)

 I'll let it idle longer, but pretty sure it will have no problems. This
 board is an element14 REVC for what that's worth.

 On Mon, Jul 13, 2015 at 6:54 AM, Robert Nelson robertcnel...@gmail.com
 wrote:

 On Mon, Jul 13, 2015 at 8:46 AM, Graham Haddock gra...@flexradio.com
 wrote:
  What does cpufreq-set -g performance do?
  Sounds like it would lock the BBB at max CPU clock speed, or at least,
 not
  let it go down to the lowest speeds.

 Correct...

  I found the generic Debian docs on cpufreq-set, but not the BBB specific
  instruction set and meanings.

 It's a generic kernel interface, nothing bbb specific about it..

 Regards,

 --
 Robert Nelson
 https://rcn-ee.com/

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread 'dl4mea' via BeagleBoard
Results from overnight test:

I used the worst rebooters for some tests:

(1) System bb1cf1 got installed with 3.19.3-bone4: *no more reboot*
uptime
 03:23:37 up 14:50,  1 user,  load average: 0.00, 0.01, 0.05

(2) System bb6c1f: installed with 4.1.1-ti-r2 #1 SMP PREEMPT Wed Jul 8 
17:03:29 UTC 2015 armv7l GNU/Linux: *2 reboots*
Jul 13 00:55:17 bb6c1f kernel: [0.00] Booting Linux on physical CPU 
0x0
Jul 13 01:51:02 bb6c1f kernel: [0.00] Booting Linux on physical CPU 
0x0

(3) System bb4f8e still has 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC 2015 
armv7l GNU/Linux: but cpufreq-set -g performance: *no more reboot*
uptime
 03:29:57 up  9:01,  1 user,  load average: 0.02, 0.06, 0.05

As I have to leave for the day, I will let all my systems run for at least 
12h without changes.
If then still like this, I will do (1) and (3) on some more devices.

@RobertCNelson: If you have further suggestions which image to test, let me 
know.

--- Guenter (dl4mea)

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans
Anyway, guys, give me an idea of what you're doing on these boards. When
you get random system reset, and I'll test here too. I have a couple free
beaglebones I can run arbitrary tests on at the moment.

On Sun, Jul 12, 2015 at 12:19 PM, William Hermans yyrk...@gmail.com wrote:

 I've had this, or something similar happen to me a few times. When I did
 apt-get update again right after, it succeeded. But I'm still not sure of
 the cause.

 On Sun, Jul 12, 2015 at 11:48 AM, 'dl4mea' via BeagleBoard 
 beagleboard@googlegroups.com wrote:

 If I look on one - but not the target worst case Beaglebone, I see only
 one package matching Robert's suggestion
 apt-cache search linux-image | grep ti | grep 4.1
 linux-image-4.1.1-ti-r2 - Linux kernel, version 4.1.1-ti-r2

 However, if I want to apt-get update on the two current worst case
 targets, I am getting

 Get:10 http://ftp.us.debian.org jessie-updates/non-free armhf Packages
 [20 B]
 Fetched 9247 kB in 20s (457 kB/s)
 W: Failed to fetch
 http://repos.rcn-ee.com/debian/dists/jessie/main/binary-armhf/Packages
 Hash Sum mismatch

 E: Some index files failed to download. They have been ignored, or old
 ones used instead.

 This system has installed
 uname -a
 Linux bb6c1f 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC 2015 armv7l
 GNU/Linux

 Is this a temporary hickup or any other idea?

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread 'dl4mea' via BeagleBoard


 W: Failed to fetch 
 http://repos.rcn-ee.com/debian/dists/jessie/main/binary-armhf/Packages  
 Hash Sum mismatch 


Solution: 
http://askubuntu.com/questions/41605/trouble-downloading-packages-list-due-to-a-hash-sum-mismatch-error

Simply: rm -rf /var/lib/apt/lists/* 

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans
I've had this, or something similar happen to me a few times. When I did
apt-get update again right after, it succeeded. But I'm still not sure of
the cause.

On Sun, Jul 12, 2015 at 11:48 AM, 'dl4mea' via BeagleBoard 
beagleboard@googlegroups.com wrote:

 If I look on one - but not the target worst case Beaglebone, I see only
 one package matching Robert's suggestion
 apt-cache search linux-image | grep ti | grep 4.1
 linux-image-4.1.1-ti-r2 - Linux kernel, version 4.1.1-ti-r2

 However, if I want to apt-get update on the two current worst case
 targets, I am getting

 Get:10 http://ftp.us.debian.org jessie-updates/non-free armhf Packages
 [20 B]
 Fetched 9247 kB in 20s (457 kB/s)
 W: Failed to fetch
 http://repos.rcn-ee.com/debian/dists/jessie/main/binary-armhf/Packages
 Hash Sum mismatch

 E: Some index files failed to download. They have been ignored, or old
 ones used instead.

 This system has installed
 uname -a
 Linux bb6c1f 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC 2015 armv7l
 GNU/Linux

 Is this a temporary hickup or any other idea?

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread Graham Haddock
Hi William:
Doing nothing with the board.  It is just sitting on the side connected to
+5V power and Ethernet.
So, for example, late last night (Central US time) I loaded
bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
onto a trusted uSD card expanded the memory using gparted to the full 16GB,
and turned off the four blue
blinky lights. No other changes.

Then I went to bed.

Reading syslog,
(Times are GMT, boot completion defined as systemd updating the time to
network time.

the initial boot (completion) was at JUL 12, 05:09:27
the lab was quiet, lights off, nothing running.
The BBB automously rebooted at 08:25:33, 13:13:22, and 14:32:27

I am now rerunning with untouched reload of
bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
Just load, install and boot.  Talk to command line by SSH.

--- Graham

==

On Sun, Jul 12, 2015 at 2:22 PM, William Hermans yyrk...@gmail.com wrote:

 Anyway, guys, give me an idea of what you're doing on these boards. When
 you get random system reset, and I'll test here too. I have a couple free
 beaglebones I can run arbitrary tests on at the moment.

 On Sun, Jul 12, 2015 at 12:19 PM, William Hermans yyrk...@gmail.com
 wrote:

 I've had this, or something similar happen to me a few times. When I did
 apt-get update again right after, it succeeded. But I'm still not sure of
 the cause.

 On Sun, Jul 12, 2015 at 11:48 AM, 'dl4mea' via BeagleBoard 
 beagleboard@googlegroups.com wrote:

 If I look on one - but not the target worst case Beaglebone, I see
 only one package matching Robert's suggestion
 apt-cache search linux-image | grep ti | grep 4.1
 linux-image-4.1.1-ti-r2 - Linux kernel, version 4.1.1-ti-r2

 However, if I want to apt-get update on the two current worst case
 targets, I am getting

 Get:10 http://ftp.us.debian.org jessie-updates/non-free armhf Packages
 [20 B]
 Fetched 9247 kB in 20s (457 kB/s)
 W: Failed to fetch
 http://repos.rcn-ee.com/debian/dists/jessie/main/binary-armhf/Packages
 Hash Sum mismatch

 E: Some index files failed to download. They have been ignored, or old
 ones used instead.

 This system has installed
 uname -a
 Linux bb6c1f 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC 2015 armv7l
 GNU/Linux

 Is this a temporary hickup or any other idea?

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans


 *Hi William:*

 *Doing nothing with the board.  It is just sitting on the side connected
 to +5V power and Ethernet.*
 *So, for example, late last night (Central US time) I loaded
 bone-debian-8.1-lxqt-4gb-*
 *armhf-2015-07-05-4gb.img*

 *onto a trusted uSD card expanded the memory using gparted to the full
 16GB, and turned off the four blue*


 *blinky lights. No other changes.*


 *Then I went to bed.*

 *Reading syslog,*


 *(Times are GMT, boot completion defined as systemd updating the time to
 network time.*

 *the initial boot (completion) was at JUL 12, 05:09:27  *

 *the lab was quiet, lights off, nothing running.*


 *The BBB automously rebooted at 08:25:33, 13:13:22, and 14:32:27*
 *I am now rerunning with untouched reload of bone-debian-8.1-lxqt-4gb-*
 *armhf-2015-07-05-4gb.img*


 *Just load, install and boot.  Talk to command line by SSH.*
 *--- Graham*


OK. Well, my own personal feelings is that this could be related to
systemd. Somehow. I have no proof so substantiate that.

So, I'll work on the problem bottom to top. What I mean by this is that
I'll start with a rootfs I know that works. In my case wheezy 7.8. I've got
that running now with

debian@beaglebone:~$ uname -a
Linux beaglebone 4.1.0-rc8-bone9 #1 Tue Jun 16 23:45:22 UTC 2015 armv7l
GNU/Linux.

I'll let it sit and idle for a day or so. After that, I'll download and
flash the Jessie image, install sysv, disable systemd. Then start the
test over again.

Oh and yeah if one of you can do me a favor and run one of your boards as
is with

*sudo cpufreq-set -g performance* and see if the problem clears up ?


On Sun, Jul 12, 2015 at 12:35 PM, Graham Haddock gra...@flexradio.com
wrote:

 Hi William:
 Doing nothing with the board.  It is just sitting on the side connected to
 +5V power and Ethernet.
 So, for example, late last night (Central US time) I loaded
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
 onto a trusted uSD card expanded the memory using gparted to the full
 16GB, and turned off the four blue
 blinky lights. No other changes.

 Then I went to bed.

 Reading syslog,
 (Times are GMT, boot completion defined as systemd updating the time to
 network time.

 the initial boot (completion) was at JUL 12, 05:09:27
 the lab was quiet, lights off, nothing running.
 The BBB automously rebooted at 08:25:33, 13:13:22, and 14:32:27

 I am now rerunning with untouched reload of
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
 Just load, install and boot.  Talk to command line by SSH.

 --- Graham

 ==

 On Sun, Jul 12, 2015 at 2:22 PM, William Hermans yyrk...@gmail.com
 wrote:

 Anyway, guys, give me an idea of what you're doing on these boards. When
 you get random system reset, and I'll test here too. I have a couple free
 beaglebones I can run arbitrary tests on at the moment.

 On Sun, Jul 12, 2015 at 12:19 PM, William Hermans yyrk...@gmail.com
 wrote:

 I've had this, or something similar happen to me a few times. When I did
 apt-get update again right after, it succeeded. But I'm still not sure of
 the cause.

 On Sun, Jul 12, 2015 at 11:48 AM, 'dl4mea' via BeagleBoard 
 beagleboard@googlegroups.com wrote:

 If I look on one - but not the target worst case Beaglebone, I see
 only one package matching Robert's suggestion
 apt-cache search linux-image | grep ti | grep 4.1
 linux-image-4.1.1-ti-r2 - Linux kernel, version 4.1.1-ti-r2

 However, if I want to apt-get update on the two current worst case
 targets, I am getting

 Get:10 http://ftp.us.debian.org jessie-updates/non-free armhf Packages
 [20 B]
 Fetched 9247 kB in 20s (457 kB/s)
 W: Failed to fetch
 http://repos.rcn-ee.com/debian/dists/jessie/main/binary-armhf/Packages
 Hash Sum mismatch

 E: Some index files failed to download. They have been ignored, or old
 ones used instead.

 This system has installed
 uname -a
 Linux bb6c1f 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC 2015 armv7l
 GNU/Linux

 Is this a temporary hickup or any other idea?

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans
ah I see. following my own advice comes in handy sometimes . . . as in
GitBisect. A bit out of my abilities.

On Sun, Jul 12, 2015 at 1:41 PM, William Hermans yyrk...@gmail.com wrote:

 *Yeah, I think the transition to linear irq domain (added at 3.18) made
 cpsw*
 * a little extra flaky. Plus the new omap_8250 serial driver is not
 bug-free;*
 * just found a flow control bug in the h/w last week.*

 * I've had ssh shells go sideways on occasion, but not with that kind of*
 * regularity or effect.*

 * Like I said, the right diagnostic method is bisecting the kernel.*
 * It's going to take a while (multiple days) if several hours are
 required to*
 * distinguish good from bad kernel.*

 * Regards,*
 * Peter Hurley*


 Hi Peter. bisecting the kernel is unknown to me. As in the meaning, But
 I was wondering if some sort of remote, and very verbose logging might not
 help ?  Currently I'm in the process of reading / learning advanced Linux
 programming, and have all these crazy ideas of what we could do. Just not
 sure what to trap and exactly 100% how to trap it.

 On Sun, Jul 12, 2015 at 1:29 PM, Peter Hurley pe...@hurleysoftware.com
 wrote:

 On 07/12/2015 03:35 PM, Graham Haddock wrote:
  Hi William:
  Doing nothing with the board.  It is just sitting on the side connected
 to +5V power and Ethernet.
  So, for example, late last night (Central US time) I loaded
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
  onto a trusted uSD card expanded the memory using gparted to the full
 16GB, and turned off the four blue
  blinky lights. No other changes.
 
  Then I went to bed.
 
  Reading syslog,
  (Times are GMT, boot completion defined as systemd updating the time to
 network time.
 
  the initial boot (completion) was at JUL 12, 05:09:27
  the lab was quiet, lights off, nothing running.
  The BBB automously rebooted at 08:25:33, 13:13:22, and 14:32:27
 
  I am now rerunning with untouched reload of
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
  Just load, install and boot.  Talk to command line by SSH.

 Yeah, I think the transition to linear irq domain (added at 3.18) made
 cpsw
 a little extra flaky. Plus the new omap_8250 serial driver is not
 bug-free;
 just found a flow control bug in the h/w last week.

 I've had ssh shells go sideways on occasion, but not with that kind of
 regularity or effect.

 Like I said, the right diagnostic method is bisecting the kernel.
 It's going to take a while (multiple days) if several hours are required
 to
 distinguish good from bad kernel.

 Regards,
 Peter Hurley

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans
Thanks Peter for the in depth explanation. I was actually just reading a
very detailed blog post by a person bug hunting in fedora 20 . . . the blog
post could be considered a book in of its self, and wow yes, lots of
learning to do before I can achieve the same myself.

On Sun, Jul 12, 2015 at 2:16 PM, Peter Hurley pe...@hurleysoftware.com
wrote:

 On 07/12/2015 04:41 PM, William Hermans wrote:
  /Yeah, I think the transition to linear irq domain (added at 3.18)
 made cpsw/
  /a little extra flaky. Plus the new omap_8250 serial driver is not
 bug-free;/
  /just found a flow control bug in the h/w last week./
  //
  /I've had ssh shells go sideways on occasion, but not with that kind
 of/
  /regularity or effect./
  //
  /Like I said, the right diagnostic method is bisecting the kernel./
  /It's going to take a while (multiple days) if several hours are
 required to/
  /distinguish good from bad kernel./
  //
  /Regards,/
  /Peter Hurley/
 
 
  Hi Peter. bisecting the kernel is unknown to me. As in the meaning,
 But I was wondering if some sort of remote, and very verbose logging might
 not help ?  Currently I'm in the process of reading / learning advanced
 Linux programming, and have all these crazy ideas of what we could do. Just
 not sure what to trap and exactly 100% how to trap it.

 Linux mainline kernel source is really just a massive linear series of
 patches,
 one after the other, all tracked by git. Bisecting is a method of reducing
 the
 number of patches under test by 1/2 at each iteration to arrive at a
 problem commit.

 So, for example, let's say that I have a problem that cropped up on
 4.2-rc1,
 but the problem wasn't happening on 4.1-rc7.

 I start a bisect with git:
 $ git bisect start v4.2-rc1 v4.1-rc7
 Bisecting: 6261 revisions left to test after this (roughly 13 steps)
 [4570a37169d4b44d316f40b2ccc681dc93fedc7b] Merge tag 'sound-4.2-rc1' of
 git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

 I build this kernel, test it, and mark it good or bad. Let's say the
 problem
 doesn't exhibit in this kernel.

 $ git bisect good
 Bisecting: 3371 revisions left to test after this (roughly 12 steps)
 [8d7804a2f03dbd34940fcb426450c730adf29dae] Merge tag 'driver-core-4.2-rc1'
 of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

 Now I build this kernel, test it, and mark it good or bad. Let's say bad
 this time.

 $git bisect bad
 [3d9f96d850e4bbfae24dc9aee03033dd77c81596] Merge tag 'armsoc-dt' of git://
 git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

 Each time, the number of commits under test are being reduced by 1/2.
 For a small kernel like Beaglebone this is no big deal, couple of minutes
 build
 time. For a 64-bit distro kernel, this can take several days for 14
 iterations.

 Having a bunch of BBBs, all testing the same kernel at the same time
 significantly improves the confidence at each iteration that the kernel
 is good or bad (since obviously a problem that takes time to manifest
 may
 be mistakenly identified as good and then the bisect will narrow on the
 wrong
 commits).

 Instrumenting a problem like this is basically impossible.

 Regards,
 Peter Hurley

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread 'dl4mea' via BeagleBoard
I now have one of the worst case rebooters running on 3.19.3-bone4 (already 
installed 8h ago)
root@bb1cf1:~# lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:Debian GNU/Linux 8.1 (jessie)
Release:8.1
Codename:   jessie
root@bb1cf1:~# uname -a
Linux rc1cf1 3.19.3-bone4 #1 Fri Mar 27 16:05:22 UTC 2015 armv7l GNU/Linux
root@bb1cf1:~# uptime
 19:47:17 up  7:49,  1 user,  load average: 0.47, 0.17, 0.09

and one on Robert's suggestion 4.1.1-ti-r2
root@rc6c1f:~# uname -a
Linux rc6c1f 4.1.1-ti-r2 #1 SMP PREEMPT Wed Jul 8 17:03:29 UTC 2015 armv7l 
GNU/Linux
root@rc6c1f:~# lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:Debian GNU/Linux 8.1 (jessie)
Release:8.1
Codename:   jessie
root@rc6c1f:~# uname -a
Linux rc6c1f 4.1.1-ti-r2 #1 SMP PREEMPT Wed Jul 8 17:03:29 UTC 2015 armv7l 
GNU/Linux
root@rc6c1f:~# uptime
 19:49:39 up 22 min,  1 user,  load average: 1.09, 0.69, 0.31



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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans
Something else that might help troubleshoot this issue if we can get a
snapshot of each system by way of *ps aux *and store them somewhere for
later examination. maybe pastebin.

http://pastebin.com/ydneAtne

On Sun, Jul 12, 2015 at 12:50 PM, 'dl4mea' via BeagleBoard 
beagleboard@googlegroups.com wrote:

 I now have one of the worst case rebooters running on 3.19.3-bone4
 (already installed 8h ago)
 root@bb1cf1:~# lsb_release -a
 No LSB modules are available.
 Distributor ID: Debian
 Description:Debian GNU/Linux 8.1 (jessie)
 Release:8.1
 Codename:   jessie
 root@bb1cf1:~# uname -a
 Linux rc1cf1 3.19.3-bone4 #1 Fri Mar 27 16:05:22 UTC 2015 armv7l GNU/Linux
 root@bb1cf1:~# uptime
  19:47:17 up  7:49,  1 user,  load average: 0.47, 0.17, 0.09

 and one on Robert's suggestion 4.1.1-ti-r2
 root@rc6c1f:~# uname -a
 Linux rc6c1f 4.1.1-ti-r2 #1 SMP PREEMPT Wed Jul 8 17:03:29 UTC 2015 armv7l
 GNU/Linux
 root@rc6c1f:~# lsb_release -a
 No LSB modules are available.
 Distributor ID: Debian
 Description:Debian GNU/Linux 8.1 (jessie)
 Release:8.1
 Codename:   jessie
 root@rc6c1f:~# uname -a
 Linux rc6c1f 4.1.1-ti-r2 #1 SMP PREEMPT Wed Jul 8 17:03:29 UTC 2015 armv7l
 GNU/Linux
 root@rc6c1f:~# uptime
  19:49:39 up 22 min,  1 user,  load average: 1.09, 0.69, 0.31



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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans

 *Yeah, I think the transition to linear irq domain (added at 3.18) made
 cpsw*
 * a little extra flaky. Plus the new omap_8250 serial driver is not
 bug-free;*
 * just found a flow control bug in the h/w last week.*

 * I've had ssh shells go sideways on occasion, but not with that kind of*
 * regularity or effect.*

 * Like I said, the right diagnostic method is bisecting the kernel.*
 * It's going to take a while (multiple days) if several hours are required
 to*
 * distinguish good from bad kernel.*

 * Regards,*
 * Peter Hurley*


Hi Peter. bisecting the kernel is unknown to me. As in the meaning, But I
was wondering if some sort of remote, and very verbose logging might not
help ?  Currently I'm in the process of reading / learning advanced Linux
programming, and have all these crazy ideas of what we could do. Just not
sure what to trap and exactly 100% how to trap it.

On Sun, Jul 12, 2015 at 1:29 PM, Peter Hurley pe...@hurleysoftware.com
wrote:

 On 07/12/2015 03:35 PM, Graham Haddock wrote:
  Hi William:
  Doing nothing with the board.  It is just sitting on the side connected
 to +5V power and Ethernet.
  So, for example, late last night (Central US time) I loaded
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
  onto a trusted uSD card expanded the memory using gparted to the full
 16GB, and turned off the four blue
  blinky lights. No other changes.
 
  Then I went to bed.
 
  Reading syslog,
  (Times are GMT, boot completion defined as systemd updating the time to
 network time.
 
  the initial boot (completion) was at JUL 12, 05:09:27
  the lab was quiet, lights off, nothing running.
  The BBB automously rebooted at 08:25:33, 13:13:22, and 14:32:27
 
  I am now rerunning with untouched reload of
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
  Just load, install and boot.  Talk to command line by SSH.

 Yeah, I think the transition to linear irq domain (added at 3.18) made cpsw
 a little extra flaky. Plus the new omap_8250 serial driver is not bug-free;
 just found a flow control bug in the h/w last week.

 I've had ssh shells go sideways on occasion, but not with that kind of
 regularity or effect.

 Like I said, the right diagnostic method is bisecting the kernel.
 It's going to take a while (multiple days) if several hours are required to
 distinguish good from bad kernel.

 Regards,
 Peter Hurley

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread Peter Hurley
On 07/12/2015 04:41 PM, William Hermans wrote:
 /Yeah, I think the transition to linear irq domain (added at 3.18) made 
 cpsw/
 /a little extra flaky. Plus the new omap_8250 serial driver is not 
 bug-free;/
 /just found a flow control bug in the h/w last week./
 //
 /I've had ssh shells go sideways on occasion, but not with that kind of/
 /regularity or effect./
 //
 /Like I said, the right diagnostic method is bisecting the kernel./
 /It's going to take a while (multiple days) if several hours are required 
 to/
 /distinguish good from bad kernel./
 //
 /Regards,/
 /Peter Hurley/
 
 
 Hi Peter. bisecting the kernel is unknown to me. As in the meaning, But I 
 was wondering if some sort of remote, and very verbose logging might not help 
 ?  Currently I'm in the process of reading / learning advanced Linux 
 programming, and have all these crazy ideas of what we could do. Just not 
 sure what to trap and exactly 100% how to trap it.

Linux mainline kernel source is really just a massive linear series of patches,
one after the other, all tracked by git. Bisecting is a method of reducing the
number of patches under test by 1/2 at each iteration to arrive at a problem 
commit.

So, for example, let's say that I have a problem that cropped up on 4.2-rc1,
but the problem wasn't happening on 4.1-rc7.

I start a bisect with git:
$ git bisect start v4.2-rc1 v4.1-rc7
Bisecting: 6261 revisions left to test after this (roughly 13 steps)
[4570a37169d4b44d316f40b2ccc681dc93fedc7b] Merge tag 'sound-4.2-rc1' of 
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

I build this kernel, test it, and mark it good or bad. Let's say the problem
doesn't exhibit in this kernel.

$ git bisect good
Bisecting: 3371 revisions left to test after this (roughly 12 steps)
[8d7804a2f03dbd34940fcb426450c730adf29dae] Merge tag 'driver-core-4.2-rc1' of 
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Now I build this kernel, test it, and mark it good or bad. Let's say bad this 
time.

$git bisect bad
[3d9f96d850e4bbfae24dc9aee03033dd77c81596] Merge tag 'armsoc-dt' of 
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Each time, the number of commits under test are being reduced by 1/2.
For a small kernel like Beaglebone this is no big deal, couple of minutes build
time. For a 64-bit distro kernel, this can take several days for 14 iterations.

Having a bunch of BBBs, all testing the same kernel at the same time
significantly improves the confidence at each iteration that the kernel
is good or bad (since obviously a problem that takes time to manifest may
be mistakenly identified as good and then the bisect will narrow on the wrong
commits).

Instrumenting a problem like this is basically impossible.

Regards,
Peter Hurley

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans
By the way, currently on sdcard I am running wheezy 7.8 I believe.
debian@beaglebone:~$ cat /etc/dogtag
BeagleBoard.org Debian Image 2015-03-01
debian@beaglebone:~$ uname -a
Linux beaglebone 3.8.13-bone70 #1 SMP Fri Jan 23 02:15:42 UTC 2015 armv7l
GNU/Linux

So I could apt-get install linux-image-4.1whatever and see if this could
be related to the rootfs, or what.

On Sun, Jul 12, 2015 at 12:22 PM, William Hermans yyrk...@gmail.com wrote:

 Anyway, guys, give me an idea of what you're doing on these boards. When
 you get random system reset, and I'll test here too. I have a couple free
 beaglebones I can run arbitrary tests on at the moment.

 On Sun, Jul 12, 2015 at 12:19 PM, William Hermans yyrk...@gmail.com
 wrote:

 I've had this, or something similar happen to me a few times. When I did
 apt-get update again right after, it succeeded. But I'm still not sure of
 the cause.

 On Sun, Jul 12, 2015 at 11:48 AM, 'dl4mea' via BeagleBoard 
 beagleboard@googlegroups.com wrote:

 If I look on one - but not the target worst case Beaglebone, I see
 only one package matching Robert's suggestion
 apt-cache search linux-image | grep ti | grep 4.1
 linux-image-4.1.1-ti-r2 - Linux kernel, version 4.1.1-ti-r2

 However, if I want to apt-get update on the two current worst case
 targets, I am getting

 Get:10 http://ftp.us.debian.org jessie-updates/non-free armhf Packages
 [20 B]
 Fetched 9247 kB in 20s (457 kB/s)
 W: Failed to fetch
 http://repos.rcn-ee.com/debian/dists/jessie/main/binary-armhf/Packages
 Hash Sum mismatch

 E: Some index files failed to download. They have been ignored, or old
 ones used instead.

 This system has installed
 uname -a
 Linux bb6c1f 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC 2015 armv7l
 GNU/Linux

 Is this a temporary hickup or any other idea?

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread Peter Hurley
On 07/12/2015 03:35 PM, Graham Haddock wrote:
 Hi William:
 Doing nothing with the board.  It is just sitting on the side connected to 
 +5V power and Ethernet.
 So, for example, late last night (Central US time) I loaded 
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
 onto a trusted uSD card expanded the memory using gparted to the full 16GB, 
 and turned off the four blue
 blinky lights. No other changes.

 Then I went to bed.

 Reading syslog,
 (Times are GMT, boot completion defined as systemd updating the time to 
 network time.

 the initial boot (completion) was at JUL 12, 05:09:27
 the lab was quiet, lights off, nothing running.
 The BBB automously rebooted at 08:25:33, 13:13:22, and 14:32:27

 I am now rerunning with untouched reload of 
 bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img
 Just load, install and boot.  Talk to command line by SSH.

Yeah, I think the transition to linear irq domain (added at 3.18) made cpsw
a little extra flaky. Plus the new omap_8250 serial driver is not bug-free;
just found a flow control bug in the h/w last week.

I've had ssh shells go sideways on occasion, but not with that kind of
regularity or effect.

Like I said, the right diagnostic method is bisecting the kernel.
It's going to take a while (multiple days) if several hours are required to
distinguish good from bad kernel.

Regards,
Peter Hurley

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans

 *(3) System bb4f8e still has 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC
 2015 armv7l GNU/Linux: but cpufreq-set -g performance: no more reboot*


Interesting . . . If memory serves correctly, that was the fix for an
older kernel. So possibly older code crept into the newer ?

On Sun, Jul 12, 2015 at 8:35 PM, 'dl4mea' via BeagleBoard 
beagleboard@googlegroups.com wrote:

 Results from overnight test:

 I used the worst rebooters for some tests:

 (1) System bb1cf1 got installed with 3.19.3-bone4: *no more reboot*
 uptime
  03:23:37 up 14:50,  1 user,  load average: 0.00, 0.01, 0.05

 (2) System bb6c1f: installed with 4.1.1-ti-r2 #1 SMP PREEMPT Wed Jul 8
 17:03:29 UTC 2015 armv7l GNU/Linux: *2 reboots*
 Jul 13 00:55:17 bb6c1f kernel: [0.00] Booting Linux on physical
 CPU 0x0
 Jul 13 01:51:02 bb6c1f kernel: [0.00] Booting Linux on physical
 CPU 0x0

 (3) System bb4f8e still has 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC
 2015 armv7l GNU/Linux: but cpufreq-set -g performance: *no more reboot*
 uptime
  03:29:57 up  9:01,  1 user,  load average: 0.02, 0.06, 0.05

 As I have to leave for the day, I will let all my systems run for at least
 12h without changes.
 If then still like this, I will do (1) and (3) on some more devices.

 @RobertCNelson: If you have further suggestions which image to test, let
 me know.

 --- Guenter (dl4mea)

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[beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread Graham
I have several Rev C BBB units, that have been in use enough to be 
considered trusted hardware.

All of them, running Debian 8.1 kernel 3.14 are rock solid.  By that, I 
mean that they will run for months without problems.
Maybe longer, I have not left them undisturbed for any longer than that.

I have tried to run the Debian 8.1 / kernel 4.1.x test releases, and they 
all autonomously reboot several times per day.
No regular or reproducible pattern, nothing in the syslog, other than the 
reboot process itself.

This includes the 2015-07-05 kernel 4.1.1 release. 
(bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img)

All I do is put it on a 16 GB card, expand the available memory to 16 GB 
from 4 GB, and turn off the 4 blinky lights. No other changes. The unit 
will reboot at random, several times per day.

This has been common to all the kerenl 4.1 releases.  Although a random 
pattern to the reboots, it is easy enough to reproduce.  If you turn off 
the blinky lights, it is easy to recognize, since they come back on when it 
reboots.  Or examine the syslog.

--- Graham

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread Robert Nelson
On Jul 12, 2015 12:20 PM, 'dl4mea' via BeagleBoard 
beagleboard@googlegroups.com wrote:

 Instabilities have been found by just flashing elinux.org images from,
for example,

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Jessie_Snapshot_console,
in special Flasher: (console) (BeagleBone Black eMMC)
 and letting the board idle with network + serial console connected

 Also, is 4.1.x stable if you don't mess with the image


 I am willing to try with serveral images, as I have 15 boards suffering
from this under supervision
 But I don't understand which sequence to go for.
 There are so many, if I look for them in
 apt-cache search linux-image

| grep ti | grep 4.1

BTW, we had similar issues when we started testing 3.14.. I saw it happen
on a board Thursday, won't be able to dig into it again to Monday.


 --- Guenter (dl4mea)


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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread Peter Hurley
On 07/12/2015 10:17 AM, Graham wrote:
 I have several Rev C BBB units, that have been in use enough to be considered 
 trusted hardware.
 
 All of them, running Debian 8.1 kernel 3.14 are rock solid.  By that, I mean 
 that they will run for months without problems.
 Maybe longer, I have not left them undisturbed for any longer than that.
 
 I have tried to run the Debian 8.1 / kernel 4.1.x test releases, and they all 
 autonomously reboot several times per day.
 No regular or reproducible pattern, nothing in the syslog, other than the 
 reboot process itself.
 
 This includes the 2015-07-05 kernel 4.1.1 release. 
 (bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img)
 
 All I do is put it on a 16 GB card, expand the available memory to 16 GB from 
 4 GB, and turn off the 4 blinky lights. No other changes. The unit will 
 reboot at random, several times per day.
 
 This has been common to all the kerenl 4.1 releases.  Although a random 
 pattern to the reboots, it is easy enough to reproduce.  If you turn off the 
 blinky lights, it is easy to recognize, since they come back on when it 
 reboots.  Or examine the syslog.

The common debugging method for problems like this is to bisect.
However, if the start and end points are 3.14 and 4.1.x, respectively, that 
would be prohibitive.
Best to find a closer start point than 3.14.

Also, is 4.1.x stable if you don't mess with the image?

Regards,
Peter Hurley


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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread 'dl4mea' via BeagleBoard
Instabilities have been found by just flashing elinux.org images from, for 
example,
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Jessie_Snapshot_console, 
in special *Flasher: (console) (BeagleBone Black eMMC)*
and letting the board idle with network + serial console connected

Also, is 4.1.x stable if you don't mess with the image? 


 

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread 'dl4mea' via BeagleBoard
Instabilities have been found by just flashing elinux.org images from, for 
example,
http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Jessie_Snapshot_console, 
in special *Flasher: (console) (BeagleBone Black eMMC)*
and letting the board idle with network + serial console connected

Also, is 4.1.x stable if you don't mess with the image 


I am willing to try with serveral images, as I have 15 boards suffering 
from this under supervision
But I don't understand which sequence to go for. 
There are so many, if I look for them in
apt-cache search linux-image

--- Guenter (dl4mea)
  

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread Graham Haddock
I will try it by reloading a totally untouched
bone-debian-8.1-lxqt-4gb-armhf-2015-07-05-4gb.img,
and report back.  No cape, trusted Rev.C hardware and power supply. All
communications via
Ethernet.



By my saying that 3.14 is rock solid, this includes up to
bone-debian-8.1-lxqt-4gb-armhf-2015-06-15-4gb.img,
which was the last non-kernel-4 test release.

Same hardware, same power supplies, same Ethernet connection. No other
hardware or connections.


--- Graham

==

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread 'dl4mea' via BeagleBoard
If I look on one - but not the target worst case Beaglebone, I see only 
one package matching Robert's suggestion
apt-cache search linux-image | grep ti | grep 4.1
linux-image-4.1.1-ti-r2 - Linux kernel, version 4.1.1-ti-r2

However, if I want to apt-get update on the two current worst case targets, 
I am getting

Get:10 http://ftp.us.debian.org jessie-updates/non-free armhf Packages [20 
B]
Fetched 9247 kB in 20s (457 kB/s)
W: Failed to fetch 
http://repos.rcn-ee.com/debian/dists/jessie/main/binary-armhf/Packages  
Hash Sum mismatch

E: Some index files failed to download. They have been ignored, or old ones 
used instead.

This system has installed
uname -a
Linux bb6c1f 4.1.0-rc8-bone9 #1 Wed Jun 17 00:05:43 UTC 2015 armv7l 
GNU/Linux

Is this a temporary hickup or any other idea?

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Re: [beagleboard] Debian 8.1 / kernel 4.1.x test releases are unstable

2015-07-12 Thread William Hermans
watchdog was the first thing that popped into my mind heh.

On Sun, Jul 12, 2015 at 10:46 AM, Robert Nelson robertcnel...@gmail.com
wrote:


 On Jul 12, 2015 12:20 PM, 'dl4mea' via BeagleBoard 
 beagleboard@googlegroups.com wrote:
 
  Instabilities have been found by just flashing elinux.org images from,
 for example,
 
 http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Jessie_Snapshot_console,
 in special Flasher: (console) (BeagleBone Black eMMC)
  and letting the board idle with network + serial console connected
 
  Also, is 4.1.x stable if you don't mess with the image
 
 
  I am willing to try with serveral images, as I have 15 boards suffering
 from this under supervision
  But I don't understand which sequence to go for.
  There are so many, if I look for them in
  apt-cache search linux-image

 | grep ti | grep 4.1

 BTW, we had similar issues when we started testing 3.14.. I saw it happen
 on a board Thursday, won't be able to dig into it again to Monday.

 
  --- Guenter (dl4mea)
 
 
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 Groups BeagleBoard group.
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