Re: [beagleboard] Kernel Panic with eMMC flasher

[Joe Spanier]

So I have to thank everyone for the patience on this one. I did the mks.ext4 
and that seemed to help but did not fix it. I bought a new sd card last night 
as that was the only variable I didnt chage other then the BBB. 

Damn thing flashed first try.  Thanks again. From now on new SD cards will be 
the first thing I try in errors like this. 

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Re: [beagleboard] Kernel Panic with eMMC flasher

[John Syn]

From:  William Hermans 
Reply-To:  "beagleboard@googlegroups.com" 
Date:  Tuesday, November 18, 2014 at 9:50 PM
To:  "beagleboard@googlegroups.com" 
Subject:  Re: [beagleboard] Kernel Panic with eMMC flasher

> Jesus, do either of you do any independent reading on your own ?
>  "guaranteed"  .  . do a bit of googling on your own . . .
You make these statements and everyone is just going to believe you? If you
are so sure of yourself, then back it up. The issue of disk cache isn¹t
applicable here since we are talking about an SDCard. So, with respect to
SDCard, why is sync ³never guaranteed. Ever²?

Regards,
John
> 
> 
> On Tue, Nov 18, 2014 at 10:44 PM, Jason Lange  wrote:
>> twou twou omwee tou twou. ;)
>> 
>> On Tue, Nov 18, 2014 at 7:49 PM, Jason Lange  wrote:
>>> 
>>> 
>>> On Tue, Nov 18, 2014 at 7:02 PM, William Hermans  wrote:
>>>> What I am trying to convey to you is that "sync" is never guaranteed. Ever.
>>> 
>>> garunteed? 
>> 
>> 
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Re: [beagleboard] Kernel Panic with eMMC flasher

[Charles Steinkuehler]

On 11/19/2014 7:16 AM, Joe Spanier wrote:
> Well that escalated quickly.
> 
> I did the windows thing as an experiment. Basically nothing in Linux
> was working so I figured may as well.

>From your symptoms, it sounds like your eMMC may be confused or borked,
probably with a bad sector or two somewhere.  The on-chip controller is
supposed to deal with this gracefully, but in my experience error cases
are generally not well dealt with across the industry.

Try wiping the entire eMMC, specifically by discarding all blocks (this
tells the embedded eMMC controller it doesn't have to save the contents
of any blocks.  Use the blkdiscard command (from Jessie) or format the
block device with ext4 (which performs a discard on all blocks) if
you're using wheezy.

Then try to dd to the entire device.  If this fails, I suspect your eMMC
is bad.

Anyone else got a suggestion for testing/verifying the eMMC?

-- 
Charles Steinkuehler
char...@steinkuehler.net

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Joe Spanier]

Well that escalated quickly. 

I did the windows thing as an experiment. Basically nothing in Linux was 
working so I figured may as well. 

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Re: [beagleboard] Kernel Panic with eMMC flasher

[William Hermans]

Jesus, do either of you do any independent reading on your own ?
 "guaranteed"  .  . do a bit of googling on your own . . .

On Tue, Nov 18, 2014 at 10:44 PM, Jason Lange  wrote:

> twou twou omwee tou twou. ;)
>
> On Tue, Nov 18, 2014 at 7:49 PM, Jason Lange  wrote:
>
>>
>>
>> On Tue, Nov 18, 2014 at 7:02 PM, William Hermans 
>> wrote:
>>
>>> What I am trying to convey to you is that "sync" is never guaranteed.
>>> Ever.
>>>
>>
>> garunteed?
>>
>
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Re: [beagleboard] Kernel Panic with eMMC flasher

[Jason Lange]

twou twou omwee tou twou. ;)

On Tue, Nov 18, 2014 at 7:49 PM, Jason Lange  wrote:

>
>
> On Tue, Nov 18, 2014 at 7:02 PM, William Hermans 
> wrote:
>
>> What I am trying to convey to you is that "sync" is never guaranteed.
>> Ever.
>>
>
> garunteed?
>

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Re: [beagleboard] Kernel Panic with eMMC flasher

[John Syn]

From:  William Hermans 
Reply-To:  "beagleboard@googlegroups.com" 
Date:  Tuesday, November 18, 2014 at 7:02 PM
To:  "beagleboard@googlegroups.com" 
Subject:  Re: [beagleboard] Kernel Panic with eMMC flasher

> What I am trying to convey to you is that "sync" is never guaranteed. Ever.
Where do you get this from. Reference?

Regards,
John
> 
> 
> On Tue, Nov 18, 2014 at 7:56 PM, Jason Lange  wrote:
>> 
>> 
>> On Tue, Nov 18, 2014 at 4:57 PM, William Hermans  wrote:
>>> 
>>> All you can do is:
>>> 
>>> write data
>>> remove media.
>>> sync.
>> 
>> write data
>> sync
>> and then remove media.
>> 
>> That's all I'm really trying to convey.  "dd" does not sync by default.
>> Unmounting from your gui should sync.  But might not if you've been sudo-ing
>> things behind it's back. Once "sync" has completed you can safely remove it
>> regardless of what some gui thinks is going on.
>> -- 
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> 
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Re: [beagleboard] Kernel Panic with eMMC flasher

[Jason Lange]

On Tue, Nov 18, 2014 at 7:02 PM, William Hermans  wrote:

> What I am trying to convey to you is that "sync" is never guaranteed. Ever.
>

garunteed?

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Re: [beagleboard] Kernel Panic with eMMC flasher

[William Hermans]

What I am trying to convey to you is that "sync" is never guaranteed. Ever.

On Tue, Nov 18, 2014 at 7:56 PM, Jason Lange  wrote:

>
>
> On Tue, Nov 18, 2014 at 4:57 PM, William Hermans 
> wrote:
>
>>
>> All you can do is:
>>
>> write data
>> remove media.
>> sync.
>>
>
> write data
> sync
> and then remove media.
>
> That's all I'm really trying to convey.  "dd" does not sync by default.
> Unmounting from your gui should sync.  But might not if you've been
> sudo-ing things behind it's back. Once "sync" has completed you can safely
> remove it regardless of what some gui thinks is going on.
>
> --
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Re: [beagleboard] Kernel Panic with eMMC flasher

[Jason Lange]

On Tue, Nov 18, 2014 at 4:57 PM, William Hermans  wrote:

>
> All you can do is:
>
> write data
> remove media.
> sync.
>

write data
sync
and then remove media.

That's all I'm really trying to convey.  "dd" does not sync by default.
Unmounting from your gui should sync.  But might not if you've been
sudo-ing things behind it's back. Once "sync" has completed you can safely
remove it regardless of what some gui thinks is going on.

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Re: [beagleboard] Kernel Panic with eMMC flasher

[William Hermans]

"prerecorded" ? I never wrote that
 . . . Preferred is what I wrote,

On Tue, Nov 18, 2014 at 7:53 PM, William Hermans  wrote:

> Advice ? Use Linux to flash Linux. I use windows on a daily basis, and
> honestly it is is my prerecorded OS. But when dealing with Linux, use
> Linux. . .
>
> On Tue, Nov 18, 2014 at 7:08 PM, Robert Nelson 
> wrote:
>
>> On Tue, Nov 18, 2014 at 7:24 PM, Joe Spanier 
>> wrote:
>> > Latest failure. This time I flashed from windows 7 just to try
>> something new, different PC and card reader, and used a wallwart. No dice.
>> Slightly different t error message with the panic though. Progress??
>>
>> Thanks for re-testing..  This looks to be evil v3.8.x, never saw it
>> fail on the eMMC, but i get that error alot of microSD cards..
>>
>> So here's a v3.14.x based kernel snapshot using jessie:
>>
>> http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Jessie_Snapshot
>>
>> It's using a newer kernel (v3.14.x) vs the old v3.8.x
>>
>> Once the eMMC has been flashed, you can safely downgrade to the v3.8.x
>> based kernel via: (and get capemgr)
>>
>> sudo apt-get update
>> sudo apt-get install linux-image-3.8.13-bone67
>> sudo reboot
>>
>> Regards,
>>
>> --
>> Robert Nelson
>> http://www.rcn-ee.com/
>>
>> --
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>
>

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Re: [beagleboard] Kernel Panic with eMMC flasher

[William Hermans]

Advice ? Use Linux to flash Linux. I use windows on a daily basis, and
honestly it is is my prerecorded OS. But when dealing with Linux, use
Linux. . .

On Tue, Nov 18, 2014 at 7:08 PM, Robert Nelson 
wrote:

> On Tue, Nov 18, 2014 at 7:24 PM, Joe Spanier  wrote:
> > Latest failure. This time I flashed from windows 7 just to try something
> new, different PC and card reader, and used a wallwart. No dice. Slightly
> different t error message with the panic though. Progress??
>
> Thanks for re-testing..  This looks to be evil v3.8.x, never saw it
> fail on the eMMC, but i get that error alot of microSD cards..
>
> So here's a v3.14.x based kernel snapshot using jessie:
>
> http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Jessie_Snapshot
>
> It's using a newer kernel (v3.14.x) vs the old v3.8.x
>
> Once the eMMC has been flashed, you can safely downgrade to the v3.8.x
> based kernel via: (and get capemgr)
>
> sudo apt-get update
> sudo apt-get install linux-image-3.8.13-bone67
> sudo reboot
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
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Re: [beagleboard] Kernel Panic with eMMC flasher

[Robert Nelson]

On Tue, Nov 18, 2014 at 7:24 PM, Joe Spanier  wrote:
> Latest failure. This time I flashed from windows 7 just to try something new, 
> different PC and card reader, and used a wallwart. No dice. Slightly 
> different t error message with the panic though. Progress??

Thanks for re-testing..  This looks to be evil v3.8.x, never saw it
fail on the eMMC, but i get that error alot of microSD cards..

So here's a v3.14.x based kernel snapshot using jessie:

http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Jessie_Snapshot

It's using a newer kernel (v3.14.x) vs the old v3.8.x

Once the eMMC has been flashed, you can safely downgrade to the v3.8.x
based kernel via: (and get capemgr)

sudo apt-get update
sudo apt-get install linux-image-3.8.13-bone67
sudo reboot

Regards,

-- 
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http://www.rcn-ee.com/

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Joe Spanier]

On Tuesday, November 18, 2014 7:24:11 PM UTC-6, Joe Spanier wrote:
>
> Latest failure. This time I flashed from windows 7 just to try something 
> new, different PC and card reader, and used a wallwart. No dice. Slightly 
> different t error message with the panic though. Progress??

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Joe Spanier]

Latest failure. This time I flashed from windows 7 just to try something new, 
different PC and card reader, and used a wallwart. No dice. Slightly different 
t error message with the panic though. Progress??

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Re: [beagleboard] Kernel Panic with eMMC flasher

[William Hermans]

First of all, as far as the sdcard is concerned. sync has nothing to do
with it, UNLESS, you are trying to remount the same exact sdcard.

sync is not infallible, and as such will not always do what you think it
may do. sync can take a considerable amount of time to achieve what you
think it should achieve.

 What does a UI(Unity ) have to do with DD ? An application that has been
around for YEARS longer than Unity ?

All you can do is:

write data
remove media.
sync.

If the OS you're using screws this up, then it does not deserve to be used.
Otherwise, it is user error.

On Tue, Nov 18, 2014 at 2:08 PM, Jason Lange  wrote:

>
>
> On Mon, Nov 17, 2014 at 1:47 PM, Joe Spanier 
>
>> I am properly ejecting the card from my laptop after completing dd. Is
>> that what you mean by sync?
>>
>
>
>>
>> > Here are the steps Im using:
 > 1. Wget the image
 > 2. md5sum check
 > 3. xzcat BBB-eMMC-Flasher... ...img.xz | sudo dd bs=4096 of=/dev/sdc

>>>
> change step 3 to:
>
> . xzcat BBB-eMMC-Flasher... ...img.xz | sudo dd bs=4096 of=/dev/sdc; sync
>
> sync ensures that whatever is in the buffers actually gets written to the
> disk.  The sdcard shouldn't even be mounted on the desktop while you dd
> it.  At least with unity it will still dd properly but the desktop is not
> aware and shows it mounted in it's previous state.  A desktop unmount at
> this point is potentially harmful.
>
> I wish there was a simple way to verify the image after you've flashed it
> to the card -- does anyone know how to do this?
>
> Cheers.
>
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Re: [beagleboard] Kernel Panic with eMMC flasher

[Jason Lange]

On Mon, Nov 17, 2014 at 1:47 PM, Joe Spanier 

> I am properly ejecting the card from my laptop after completing dd. Is
> that what you mean by sync?
>


>
> > Here are the steps Im using:
>>> > 1. Wget the image
>>> > 2. md5sum check
>>> > 3. xzcat BBB-eMMC-Flasher... ...img.xz | sudo dd bs=4096 of=/dev/sdc
>>>
>>
change step 3 to:

. xzcat BBB-eMMC-Flasher... ...img.xz | sudo dd bs=4096 of=/dev/sdc; sync

sync ensures that whatever is in the buffers actually gets written to the
disk.  The sdcard shouldn't even be mounted on the desktop while you dd
it.  At least with unity it will still dd properly but the desktop is not
aware and shows it mounted in it's previous state.  A desktop unmount at
this point is potentially harmful.

I wish there was a simple way to verify the image after you've flashed it
to the card -- does anyone know how to do this?

Cheers.

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Robert Nelson]

On Tue, Nov 18, 2014 at 9:47 AM, Joe Spanier  wrote:

>
> https://rcn-ee.net/deb/testing/2014-11-11/lxde-4gb/BBB-eMMC-flasher-debian-7.7-lxde-4gb-armhf-2014-11-11-4gb.img.xz
> is the image. Im powering through USB plugged into a wall outlet. No Capes,
> just power, and HDMI.
>
> I was able to successfully flash
> https://rcn-ee.net/deb/testing/2014-11-11/console/BBB-eMMC-flasher-debian-7.7-console-armhf-2014-11-11-2gb.img.xz
> and pull up the console. There was some concern on the machinekit page that
> I was using an older boot loader but that should have fixed that I would
> think.
>
> I am for sure using a RevC with the 4g eMMC and I am pushing the boot
> button to boot from the SD.
>

Can you please retry with a 5volt DC jack. rsync really hits the
microSD/eMMC hard while flashing, thus it's fast, but any voltage ripples
can mess with the mmc devices.

Since the console image is so much smaller (200mb vs 1.7gb) we don't
normally see any mmc write errors during the flashing procedure.

Regards,

-- 
Robert Nelson
http://www.rcn-ee.com/

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Re: [beagleboard] Kernel Panic with eMMC flasher

[evilwulfie]

Flashing while powered through USB is not recommended.


On 11/18/2014 8:47 AM, Joe Spanier wrote:
> https://rcn-ee.net/deb/testing/2014-11-11/lxde-4gb/BBB-eMMC-flasher-debian-7.7-lxde-4gb-armhf-2014-11-11-4gb.img.xz
> is the image. Im powering through USB plugged into a wall outlet. No
> Capes, just power, and HDMI. 
>
> I was able to successfully
> flash 
> https://rcn-ee.net/deb/testing/2014-11-11/console/BBB-eMMC-flasher-debian-7.7-console-armhf-2014-11-11-2gb.img.xz
> and pull up the console. There was some concern on the machinekit page
> that I was using an older boot loader but that should have fixed that
> I would think. 
>
> I am for sure using a RevC with the 4g eMMC and I am pushing the boot
> button to boot from the SD.
>
>
> On Tuesday, November 18, 2014 9:39:39 AM UTC-6, RobertCNelson wrote:
>
> Humm, that's 5 minutes into the flasher..
>
> What was the exact name of the image you flashed?
>
> How are you powering the board? any other capes attached?
>
>
>
> On Tue, Nov 18, 2014 at 9:37 AM, Joe Spanier  > wrote:
>
> 
> 
>
> 
> 
>
> Here is a screenshot of the panic 
>
> -- 
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> .
>
>
>
>
> -- 
> Robert Nelson
> http://www.rcn-ee.com/
>
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Re: [beagleboard] Kernel Panic with eMMC flasher

[Robert Nelson]

Humm, that's 5 minutes into the flasher..

What was the exact name of the image you flashed?

How are you powering the board? any other capes attached?



On Tue, Nov 18, 2014 at 9:37 AM, Joe Spanier  wrote:

>
>> 
>>
>>
>> 
>>
>>> Here is a screenshot of the panic
>>
>>  --
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Robert Nelson
http://www.rcn-ee.com/

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Joe Spanier]

https://rcn-ee.net/deb/testing/2014-11-11/lxde-4gb/BBB-eMMC-flasher-debian-7.7-lxde-4gb-armhf-2014-11-11-4gb.img.xz
 
is the image. Im powering through USB plugged into a wall outlet. No Capes, 
just power, and HDMI. 

I was able to successfully 
flash 
https://rcn-ee.net/deb/testing/2014-11-11/console/BBB-eMMC-flasher-debian-7.7-console-armhf-2014-11-11-2gb.img.xz
 
and pull up the console. There was some concern on the machinekit page that 
I was using an older boot loader but that should have fixed that I would 
think. 

I am for sure using a RevC with the 4g eMMC and I am pushing the boot 
button to boot from the SD.


On Tuesday, November 18, 2014 9:39:39 AM UTC-6, RobertCNelson wrote:
>
> Humm, that's 5 minutes into the flasher..
>
> What was the exact name of the image you flashed?
>
> How are you powering the board? any other capes attached?
>
>
>
> On Tue, Nov 18, 2014 at 9:37 AM, Joe Spanier  > wrote:
>
>>
>>> 
>>>
>>>
>>> 
>>>
 Here is a screenshot of the panic 
>>>
>>>  -- 
>> For more options, visit http://beagleboard.org/discuss
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>>
>
>
>
> -- 
> Robert Nelson
> http://www.rcn-ee.com/
>  

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Joe Spanier]

There is definitely a text output from the HDMI That is where Im seeing the 
kernel panic. I am trying to flash a new uSD now to try it. If it happens 
again Ill just take a picture of the screen. 

On Monday, November 17, 2014 3:55:22 PM UTC-6, RobertCNelson wrote:
>
> On Mon, Nov 17, 2014 at 3:47 PM, Joe Spanier  > wrote: 
> > I dont have a serial cable. Probably need to pick one up. 
>
> Okay, I'm a little confused.. How then do you know your getting a 
> kernel panic?  While flashing all debug info gets directed over the 
> serial. I still haven't mirrored any of the progress back to hdmi 
> output.. 
>
> > I am properly ejecting the card from my laptop after completing dd. Is 
> that 
> > what you mean by sync? 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Robert Nelson]

On Mon, Nov 17, 2014 at 3:47 PM, Joe Spanier  wrote:
> I dont have a serial cable. Probably need to pick one up.

Okay, I'm a little confused.. How then do you know your getting a
kernel panic?  While flashing all debug info gets directed over the
serial. I still haven't mirrored any of the progress back to hdmi
output..

> I am properly ejecting the card from my laptop after completing dd. Is that
> what you mean by sync?

Regards,

-- 
Robert Nelson
http://www.rcn-ee.com/

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Joe Spanier]

I dont have a serial cable. Probably need to pick one up. 

I am properly ejecting the card from my laptop after completing dd. Is that 
what you mean by sync?

On Monday, November 17, 2014 1:23:43 PM UTC-6, Jason Lange wrote:
>
> This might not be part of the problem, but I have created much mysterious 
> misery by forgetting to "sync" after "dd"-ing my sd card.  If you forgot to 
> do this and yanked your card out after dd finished you cannot trust that 
> you have an accurate and functional image.  spread the word.
>
>
> On Mon, Nov 17, 2014 at 7:40 AM, Robert Nelson  > wrote:
>
>> On Sun, Nov 16, 2014 at 10:41 PM, Joe Spanier > > wrote:
>> > I am trying to flash my eMMC with the image here:
>> > http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Debian_Releases I 
>> am
>> > using the 4Gb flasher for the RevC. I can flash the microSD but all of 
>> the
>> > images ive tried cause Kernel Panics when I try to flash the BBB. Im 
>> sure
>> > this is something I am doing but Im not sure.
>> >
>> > Here are the steps Im using:
>> > 1. Wget the image
>> > 2. md5sum check
>> > 3. xzcat BBB-eMMC-Flasher... ...img.xz | sudo dd bs=4096 of=/dev/sdc
>> > 4. load SD and apply power
>> > 5. kernel panic
>>
>> Well 3.8 always panic's (drm) when shutdown at the completion of the
>> flashing procedure.
>>
>> If you have the serial log from the flashing procedure this would confirm 
>> that.
>>
>>
>> Regards,
>>
>> --
>> Robert Nelson
>> http://www.rcn-ee.com/
>>
>> --
>> For more options, visit http://beagleboard.org/discuss
>> ---
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>
>

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Re: [beagleboard] Kernel Panic with eMMC flasher

[Jason Lange]

This might not be part of the problem, but I have created much mysterious
misery by forgetting to "sync" after "dd"-ing my sd card.  If you forgot to
do this and yanked your card out after dd finished you cannot trust that
you have an accurate and functional image.  spread the word.


On Mon, Nov 17, 2014 at 7:40 AM, Robert Nelson 
wrote:

> On Sun, Nov 16, 2014 at 10:41 PM, Joe Spanier 
> wrote:
> > I am trying to flash my eMMC with the image here:
> > http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Debian_Releases I
> am
> > using the 4Gb flasher for the RevC. I can flash the microSD but all of
> the
> > images ive tried cause Kernel Panics when I try to flash the BBB. Im sure
> > this is something I am doing but Im not sure.
> >
> > Here are the steps Im using:
> > 1. Wget the image
> > 2. md5sum check
> > 3. xzcat BBB-eMMC-Flasher... ...img.xz | sudo dd bs=4096 of=/dev/sdc
> > 4. load SD and apply power
> > 5. kernel panic
>
> Well 3.8 always panic's (drm) when shutdown at the completion of the
> flashing procedure.
>
> If you have the serial log from the flashing procedure this would confirm
> that.
>
>
> Regards,
>
> --
> Robert Nelson
> http://www.rcn-ee.com/
>
> --
> For more options, visit http://beagleboard.org/discuss
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Re: [beagleboard] Kernel Panic with eMMC flasher

[Robert Nelson]

On Sun, Nov 16, 2014 at 10:41 PM, Joe Spanier  wrote:
> I am trying to flash my eMMC with the image here:
> http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Debian_Releases I am
> using the 4Gb flasher for the RevC. I can flash the microSD but all of the
> images ive tried cause Kernel Panics when I try to flash the BBB. Im sure
> this is something I am doing but Im not sure.
>
> Here are the steps Im using:
> 1. Wget the image
> 2. md5sum check
> 3. xzcat BBB-eMMC-Flasher... ...img.xz | sudo dd bs=4096 of=/dev/sdc
> 4. load SD and apply power
> 5. kernel panic

Well 3.8 always panic's (drm) when shutdown at the completion of the
flashing procedure.

If you have the serial log from the flashing procedure this would confirm that.


Regards,

-- 
Robert Nelson
http://www.rcn-ee.com/

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