[openchrome-devel] [Bug 106326] openchrome git failed on xubuntu 18.04

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--- Comment #74 from sebastien  ---
I have update openchrome git on my samsung nc20/xubuntu 18.10

suspend/resume working

thanks :)

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sebastien  changed:

   What|Removed |Added

 Resolution|NOTABUG |FIXED

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sebastien  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |NOTABUG

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--- Comment #73 from sebastien  ---
I think Canonical is already aware of the problem
I saw the solution on the ubuntu wiki
https://doc.ubuntu-fr.org/veille_et_hibernation#mise_en_veille  (3.3.9)

others on the Ubuntu-Fr forum also have standby issues on 18.04
for me it's more of a problem of SystemD

and we will have to wait for evolutions of SystemD to see if it corrects the
problem

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--- Comment #72 from Kevin Brace  ---
Okay, I did a register dump comparison, and everything looks good.
sebastien, do you think the bug here was Xubuntu 18.04's standby entry script's
bug and not OpenChrome DDX's fault?
If you think so, you may want to contact Canonical and / or Xubuntu developers
to let them know that standby works via pm-suspend but not through Start Menu's
Log Out button.
You can close the bug if you want to.
The patch itself will be committed with some enhancements since VIA EPIA-M830
mainboard needs the fix for standby resume to have a chance to work.

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--- Comment #71 from sebastien  ---
Created attachment 140405
  --> https://bugs.freedesktop.org/attachment.cgi?id=140405=edit
dump via reg after standbye (without patch)

dump via reg after standbye without your patch

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--- Comment #70 from sebastien  ---
Created attachment 140404
  --> https://bugs.freedesktop.org/attachment.cgi?id=140404=edit
dump via reg before standbye (without patch)

via reg dump before without your patch

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--- Comment #69 from sebastien  ---
ok 

1) yes
2) yes
3) yes i try three time
4) yes fp and vga working (clone mode)

i join reg dump

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--- Comment #68 from Kevin Brace  ---
The reason Ctrl + Alt + F1 etc. is not working is due to the VGA registers not
getting restored after standby resume.
At this point, OpenChrome DDX does not have the code to properly restore VGA
registers for VT.
OpenChrome DRM with KMS will resolve this when it is mainlined.



(In reply to sebastien from comment #65)
> ok, i did not make any video, but i kept looking for where the problem might
> come from.
> I disable in the bios the option "resume on usb device" and now the netbook
> seems to suspend correctly.
> when I press the power button to wake up, I see the led of the wifi turned
> on, the key lock maj works again, but the screen stay black 
> 
> but when I press ctrl + alt + f7, the screen turns on and shows me the lock
> screen but I have no access to it (the mouse or the keyboard does not work)
> so I have to reboot .
> 
> I also tried disabling wifi and ethernet, it does not change anything.
> 
> (I did the test without the second vga screen)
> 
> (ctrl + alt + f1/2/3 etc does not working, just f7)

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--- Comment #67 from Kevin Brace  ---
I am glad there is a workaround.
More questions.

1) Is the working standby resume with the patch applied?

2) Does the working standby resume method work without the patch?

3) Using the working standby resume method, are you able to resume from standby
more than once?

4) Is the FP and VGA also working after standby resume?


I will also like to obtain register dump data for the before and after standby
resume.


(In reply to sebastien from comment #66)
> hm, today i use command:
> 
> sudo pm-suspend (with pm-utils) for suspend/resume and . its WORKING 
> 
> so actually the problem comes from xubuntu 18.04 and I think mostly of
> systemD.
> 
> I have to try again with the connected vga screen

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--- Comment #66 from sebastien  ---
hm, today i use command:

sudo pm-suspend (with pm-utils) for suspend/resume and . its WORKING 

so actually the problem comes from xubuntu 18.04 and I think mostly of systemD.

I have to try again with the connected vga screen

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--- Comment #65 from sebastien  ---
ok, i did not make any video, but i kept looking for where the problem might
come from.
I disable in the bios the option "resume on usb device" and now the netbook
seems to suspend correctly.
when I press the power button to wake up, I see the led of the wifi turned on,
the key lock maj works again, but the screen stay black 

but when I press ctrl + alt + f7, the screen turns on and shows me the lock
screen but I have no access to it (the mouse or the keyboard does not work) so
I have to reboot .

I also tried disabling wifi and ethernet, it does not change anything.

(I did the test without the second vga screen)

(ctrl + alt + f1/2/3 etc does not working, just f7)

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--- Comment #64 from sebastien  ---
hmm, i have disabled network with your command, same, the suspend/resume don't
working.

BUT, it seems that my netbook has another behavior when it is on battery.
I have to make a video, it will be better ...
I said that I did the test without vga plugged there

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--- Comment #63 from Kevin Brace  ---
I am starting to think this bug as "not our bug."
Since your computer appears to lose complete control (i.e., keyboard capslock
not toggling), maybe some other device driver is locking up the system.
You can try to remove LAN and WLAN before standby.

$ sudo rmmod ath5k
$ sudo rmmod sky2
(Enter standby)
(Leave standby)
$ sudo modprobe sky2
$ sudo modprobe ath5k

I have seen VIA Velocity LAN device driver interfering with standby resume in
the course of testing OpenChrome DRM.
Furthermore, Thomas Schlichter reported the same bug, but did not appear to
indicate a complete lockup (merely corrupted screen).
He used Kubuntu 16.10 (Linux 4.8).
If you can, you may want to install Xubuntu 16.04 in another partition, install
the compiled latest OpenChrome DDX (possibly with appropriate patches), and
test standby resume.




(In reply to sebastien from comment #62)
> it's the same as before

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--- Comment #62 from sebastien  ---
it's the same as before

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--- Comment #61 from sebastien  ---
I try the patch, but no it doesn't working :(

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--- Comment #60 from Kevin Brace  ---
sebastien, I saw the video.
It has been known to me for about a year that VIA EPIA-M830 mainboard (VX800
chipset) has a standby resume issue, but I did not know what to do about it.
What happens is that the screen becomes totally corrupted after standby resume.
This affects even VGA.
I spent about 4 to 5 hours yesterday analyzing what was going on, and finally
found the registers that were getting corrupted when the computer comes out of
standby resume.
There were registers I did not really think about them, hence, I did not know
how important they were to VX800 chipset.
The interesting thing is that these registers do exist with VX855 and VX900
chipsets, but for the models I tested (Wyse Cx0 thin client and ECS VX900-I
mainboard), they do not get corrupted after exiting standby resume.
Apply the patch to Version 0.6.175.
I hope it improves your standby resume situation.


(In reply to sebastien from comment #58)
> I wanted to share the video on dropbox but it does not work with your email.
> so I put it on youtube.
> https://youtu.be/XdMRUgU3SKU

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--- Comment #59 from Kevin Brace  ---
Created attachment 139892
  --> https://bugs.freedesktop.org/attachment.cgi?id=139892=edit
VX800 chipset standby resume fix to try 1

The patch was tested on VIA EPIA-M830 mainboard.

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--- Comment #58 from sebastien  ---
I wanted to share the video on dropbox but it does not work with your email.
so I put it on youtube.
https://youtu.be/XdMRUgU3SKU

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--- Comment #57 from Kevin Brace  ---
Yes.


(In reply to sebastien from comment #56)
> your email is kevinbrace gmx.com ?

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--- Comment #56 from sebastien  ---
your email is kevinbrace gmx.com ?

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--- Comment #55 from Kevin Brace  ---
What video?
I did not receive a link for it.


(In reply to sebastien from comment #54)
> ok, did you see the video?

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--- Comment #54 from sebastien  ---
ok, did you see the video?

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--- Comment #53 from Kevin Brace  ---
Unrelated, but I recently finished adding VT1632(A) DVI transmitter support to
OpenChrome DRM.
As a result, I have more time to deal with your issue.

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--- Comment #52 from Kevin Brace  ---
Due to various activities unrelated to OpenChrome development, I will not have
time until Saturday or Sunday to spend time on OpenChrome, but go ahead and
send me the e-mail.


(In reply to sebastien from comment #51)
> (In reply to Kevin Brace from comment #49)
> > Are you saying that VGA is also dead?
> > I am wondering how you got that screen capture picture since it appears to
> > be somewhat similar to the screen of you FP in the picture.
> > 
> > https://lists.freedesktop.org/archives/openchrome-devel/2017-March/003236.
> > html
> > https://lists.freedesktop.org/archives/openchrome-devel/attachments/20170312/
> > de3ef29d/attachment-0002.jpg
> > 
> > sebastien, you mentioned that the computer was not entering standby, but the
> > picture you uploaded appears to be very similar to the above poster's
> > (Thomas Schlichter) picture.
> > 
> > 
> > (In reply to sebastien from comment #48)
> > > 
> > > yes but now it display black screen; xubuntu update cause ?
> HI
> sorry for time, I can not tell you what is happening in English... so I made
> a video dropbox.
> Can I give you a link by email?

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--- Comment #51 from sebastien  ---
(In reply to Kevin Brace from comment #49)
> Are you saying that VGA is also dead?
> I am wondering how you got that screen capture picture since it appears to
> be somewhat similar to the screen of you FP in the picture.
> 
> https://lists.freedesktop.org/archives/openchrome-devel/2017-March/003236.
> html
> https://lists.freedesktop.org/archives/openchrome-devel/attachments/20170312/
> de3ef29d/attachment-0002.jpg
> 
> sebastien, you mentioned that the computer was not entering standby, but the
> picture you uploaded appears to be very similar to the above poster's
> (Thomas Schlichter) picture.
> 
> 
> (In reply to sebastien from comment #48)
> > 
> > yes but now it display black screen; xubuntu update cause ?
HI
sorry for time, I can not tell you what is happening in English... so I made a
video dropbox.
Can I give you a link by email?

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--- Comment #50 from Kevin Brace  ---
You might have gotten hit by the VGA connector detection problem.
Can you try a few more times?
Some of them might work differently.
When you get the blank screen, if you grab the Xorg.0.log.old during the next
boot, that will be Xorg.0.log from the previous boot.
If this happens, go ahead and upload the Xorg.0.log.old.
The log will indicate whether or not VGA connector detection succeeded or not
somewhere in the log.


(In reply to sebastien from comment #48)
>
> yes but now it display black screen; xubuntu update cause ?

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--- Comment #49 from Kevin Brace  ---
Are you saying that VGA is also dead?
I am wondering how you got that screen capture picture since it appears to be
somewhat similar to the screen of you FP in the picture.

https://lists.freedesktop.org/archives/openchrome-devel/2017-March/003236.html
https://lists.freedesktop.org/archives/openchrome-devel/attachments/20170312/de3ef29d/attachment-0002.jpg

sebastien, you mentioned that the computer was not entering standby, but the
picture you uploaded appears to be very similar to the above poster's (Thomas
Schlichter) picture.


(In reply to sebastien from comment #48)
> 
> yes but now it display black screen; xubuntu update cause ?

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--- Comment #48 from sebastien  ---
(In reply to Kevin Brace from comment #45)
> Regarding Comment #44, just click the direct link.
> 
> https://bugs.freedesktop.org/attachment.cgi?id=139343

yes but now it display black screen; xubuntu update cause ?

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--- Comment #47 from sebastien  ---
Created attachment 139559
  --> https://bugs.freedesktop.org/attachment.cgi?id=139559=edit
dump log by ssh after standbye

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--- Comment #46 from sebastien  ---
i was able to collect dump log after standbye via ssh
i join log

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--- Comment #45 from Kevin Brace  ---
Regarding Comment #44, just click the direct link.

https://bugs.freedesktop.org/attachment.cgi?id=139343

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--- Comment #43 from Kevin Brace  ---
sebastien, can you activate VGA and FP, then enter standby?
I assume you are doing this, but if you are just merely hooking up VGA after
resume, I will assume nothing will display since it was disconnected prior to
entering standby.
Unfortunately, there is no support for automatic hotplugging modesetting, and I
wish I can implement this (some of the newer VIA hardware might be capable of
this, but only OpenChrome DRM has the interrupt support needed to support
this).
Regarding VT after resume, OpenChrome DDX does not really have the code to
reinitialize VT screen at this point.
When the computer enters standby, all the relevant registers lose their values,
hence the blank screen.
GUI desktop is not affected since it has the code to reinitialize all the
relevant registers (Of course, I am not doing something right, so your Samsung
NC20's FP is not currently working after resume.).
If there is a way to reinitialize VT screen's display engine (CRTC is the more
traditional term), then I will like to implement this eventually.
OpenChrome DRM has the fix implemented for this issue (KMS has built-in VT
screen support.), but it won't be available for a while.


(In reply to sebastien from comment #42)
> VGA hotplugging work.
> 
> my netbook standbye correctly but the screen don't resume after, it is dead.
> the netbook working because i was able to pressing caps lock and the led
> working.
> 
> so, I press ctrl+f1/2/3/4/6, and the screen still dead but ctrl+f7 work and
> display a lock up screen of xubuntu, but touchpad or keyboard not working.
> 
> i search a way for collect dump log...

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--- Comment #41 from Kevin Brace  ---
If the VGA hotplugging is not working, this might be because I changed the
detection method between OpenChrome DDX Version 0.6 (0.6.0) and 0.6.175.
Does it happen occasionally?
If this is the case, then you are being affected by the code change.
I might change the code to go back to the original detection method.


(In reply to sebastien from comment #39)
> ho, and hotplug vga working

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--- Comment #40 from Kevin Brace  ---
Okay, that's good that at least the basic functionality is working.
Regarding standby, after you resume the computer, is the computer still
running?
There are models where the computer completely locks up.
You can tell this by pressing Caps Lock or Number Lock to see if the LED
toggles.
If the LED toggles, then the computer is still running.
What you can do is you can ssh into the computer to collect the register dump
data.
To be honest, I do not know how to do this.
The lazy method I use to collect the register dump data by copying via_reg_tool
to /home/("Your user name"), and run via_reg_tool from there.
If the screen is dead after resume but the computer is running, you can switch
to the VT (Virtual Terminal) by pressing Alt + F1, enter your user name and
password, then run via_reg_tool.
In this case, you will have to enter it by the keyboard while the screen is
dead, so it is a little hard to pull this off.
If VGA is alive then you life is much easier since you have that screen to
collect the register dump data.
The data I want here is the before and after standby resume register dump data.
I already have the before standby data, so all you need to collect is the after
standby data.


(In reply to sebastien from comment #38)
> yes, i was able to disable and enable the flat panel in dual screen mode.
> 
> suspend/resume don't work

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--- Comment #39 from sebastien  ---
ho, and hotplug vga working

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--- Comment #38 from sebastien  ---
yes, i was able to disable and enable the flat panel in dual screen mode.

suspend/resume don't work

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--- Comment #37 from Kevin Brace  ---
Okay, I compared the register dump and I did not see any issues when comparing
before FP off versus after FP on.
The right registers are being turned on, I think.
Are you able to turn FP on / off from Display setting of Xubuntu?
For now, I am not talking about standby resume; just merely turn FP on and off
via Display setting while VGA is connected so that you still have one screen to
normally control the computer.


(In reply to sebastien from comment #20)
> when i boot with vga and flat panel 
> i was also able to disable flat panel, but impossible after to restart flat
> panel

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--- Comment #36 from sebastien  ---
ok i join log

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--- Comment #35 from sebastien  ---
Created attachment 139542
  --> https://bugs.freedesktop.org/attachment.cgi?id=139542=edit
Xorg.0.log

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--- Comment #34 from sebastien  ---
Created attachment 139541
  --> https://bugs.freedesktop.org/attachment.cgi?id=139541=edit
After turning on

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--- Comment #33 from sebastien  ---
Created attachment 139540
  --> https://bugs.freedesktop.org/attachment.cgi?id=139540=edit
after turning_off

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--- Comment #32 from sebastien  ---
Created attachment 139539
  --> https://bugs.freedesktop.org/attachment.cgi?id=139539=edit
before turning off

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--- Comment #31 from Kevin Brace  ---
sebastien, a lot of my time got taken for various time consuming tasks this
week (the week of May 6th, 2018).
For example,I had to replace my main development computer's (HP 2133 mini-note)
SSD which just died after one year of use.
I will have limited time to work on OpenChrome for the week of May 13th, 2018,
but I will still try to make some progress.
I upgraded the OpenChrome DDX version to 0.6.175.
It contains the initial fix for Samsung NC20 netbook, so you do not need the
patch anymore if you pull, compile, and install the latest
Since I do not have the actual hardware in front of me, I will need to rely on
you to fix issues.
Let's start with turming FP or VGA via Display settings of Xubuntu.
Can you turn FP on / off reliability via Display settings?
Please attach these register dumps.

- Before turning off the FP
- After turning off the FP
- After turning on the FP

You will likely need to have VGA running all the time.
I will also need to have the associated Xorg.0.log.


(In reply to sebastien from comment #30)
> yeah its ok for comment 22

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--- Comment #30 from sebastien  ---
yeah its ok for comment 22

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--- Comment #29 from sebastien  ---
standbye/resume don't working with vga and flat panel or with flat panel only.
I was wrong, my netbook was not really on standbye and I had to reboot
computer.
i joint dump before and reboot after suspend failed

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--- Comment #28 from sebastien  ---
Created attachment 139389
  --> https://bugs.freedesktop.org/attachment.cgi?id=139389=edit
dump after boot, standbye don't working

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--- Comment #27 from sebastien  ---
Created attachment 139388
  --> https://bugs.freedesktop.org/attachment.cgi?id=139388=edit
before standbye 2 dump

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--- Comment #26 from Kevin Brace  ---
sebastien, can you reply to Comment #22?

https://bugs.freedesktop.org/show_bug.cgi?id=106326#c22

Also, I will like to have before and after register dump for FP + VGA
configuration.

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--- Comment #25 from sebastien  ---
hmm, I have retest suspend/resume
its appear suspend/resume not working with flat panel only

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--- Comment #24 from sebastien  ---
when fp and vga screens are plugged.



yes I know for the outputs hdmi, but I wanted to say that I will be able to
test this when the hdmi code will be done

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--- Comment #23 from Kevin Brace  ---
It appears that when the FP is assigned to IGA2, standby is not working well.
What we can do is to do the same register dump with FP + VGA configuration for
before and after standby.

> when vga et fp branched

What do you mean by the above sentence?


(In reply to sebastien from comment #18)
> ok so i have apply your patch
> autogen + make + make install + reboot
> 
> after reboot : 
> 
> fp only working
> fp + vga working
> 
> standbye resume working for fp only 
> standbye resume doesn't working for vga + flat panel (vga working, but flat
> panel are graphic error, see picture)
> 
> when vga et fp branched
> i was able to shutdown vga, but impossible to restart vga screen
> 
> when only flat panel working
> i have branched vga screen but its doesn't working 
> 
> hotplug vga dont working

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--- Comment #22 from Kevin Brace  ---
sebastien, while the patch is not perfect, I will commit the code into the
upstream repository since it improves the situation on your end.
The following message will be added to the commit.

Tested-by: sebastien 

If you want to alter it, let me know.
We will continue to analyze the problem since the displays are not working 100%
correctly at this point.

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--- Comment #21 from Kevin Brace  ---
sebastien, currently there is no support for VX900 chipset HDMI within
OpenChrome DDX UMS (User Mode Setting).
It might happen eventually, but certainly not for OpenChrome DDX Version 0.7
release.
VGA for VX900 chipset works since I have tested it with ECS VX900-I mainboard.


(In reply to sebastien from comment #14)
> ok thanks for your work, i joint lspci dump log 
> Its a pity to add special code for my netbook. 
> but yes, bug under linux are often linked to bios. (acpi etc)
> sorry for my bad english, i'm french ...
> 
> so i have also a via artigo a1150 (vx900 vga and hdmi) and via epia (vx900
> vga and hdmi)
> 
> I will test the openchrome code on this hardware

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--- Comment #20 from sebastien  ---
when i boot with vga and flat panel 
i was also able to disable flat panel, but impossible after to restart flat
panel

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--- Comment #19 from sebastien  ---
Created attachment 139343
  --> https://bugs.freedesktop.org/attachment.cgi?id=139343=edit
picture after standbye vga + fp

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--- Comment #18 from sebastien  ---
ok so i have apply your patch
autogen + make + make install + reboot

after reboot : 

fp only working
fp + vga working

standbye resume working for fp only 
standbye resume doesn't working for vga + flat panel (vga working, but flat
panel are graphic error, see picture)

when vga et fp branched
i was able to shutdown vga, but impossible to restart vga screen

when only flat panel working
i have branched vga screen but its doesn't working 

hotplug vga dont working

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--- Comment #17 from Kevin Brace  ---
In case you are not sure how to apply the patch, this is how you do it.

(From xf86-video-OpenChrome root directory)
patch -p 1 < OpenChrome_DDX_Version_0_6_174_Samsung_NC20_FP_Fix.patch

Then compile and install the DDX.

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--- Comment #16 from Kevin Brace  ---
sebastien, here is the patch.
I hope it works.
Assuming that FP solo (i.e., FP only w/o VGA) works, test FP + VGA.
Try turning off FP and / or VGA via Display panel of the Xubuntu settings (I
forgot the official name since I am writing this reply from a Lubuntu 18.04
computer.).
If the basic functionality is working, try standby resume for all kinds of
configurations (FP, FP + VGA, FP only boot, then attach VGA after boot).
I hope this patch fixes the Samsung NC20 netbook issues for once and for all.


(In reply to sebastien from comment #14)
> ok thanks for your work, i joint lspci dump log 
> Its a pity to add special code for my netbook. 
> but yes, bug under linux are often linked to bios. (acpi etc)
> sorry for my bad english, i'm french ...
> 
> so i have also a via artigo a1150 (vx900 vga and hdmi) and via epia (vx900
> vga and hdmi)
> 
> I will test the openchrome code on this hardware

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--- Comment #15 from Kevin Brace  ---
Created attachment 139339
  --> https://bugs.freedesktop.org/attachment.cgi?id=139339=edit
Samsung NC20 FP Fix

Samsung NC20 FP Fix Patch

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--- Comment #14 from sebastien  ---
ok thanks for your work, i joint lspci dump log 
Its a pity to add special code for my netbook. 
but yes, bug under linux are often linked to bios. (acpi etc)
sorry for my bad english, i'm french ...

so i have also a via artigo a1150 (vx900 vga and hdmi) and via epia (vx900 vga
and hdmi)

I will test the openchrome code on this hardware

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--- Comment #13 from sebastien  ---
Created attachment 139334
  --> https://bugs.freedesktop.org/attachment.cgi?id=139334=edit
NC20 lspci dump

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--- Comment #12 from Kevin Brace  ---
sebastien, thank you for the before and after register dump.
It was very helpful in understanding the underlying hardware configuration
Samsung used.
It appears that Samsung hooked up LVDS2 (LVDS channel 2) to the FP rather than
the more logical LVDS1.
I think I will need to use quirk code to handle this special case.
As for why OpenChrome DDX works with a VGA monitor attached, LVDS2 happens to
have IGA2 (think of it as display controller #2) selected as its display source
(very likely set by the VGA BIOS), although the current code "thinks" LVDS1 has
the FP connected.
The current code is setting everything right except LVDS2 since it thinks LVDS1
has the FP attached.
When VGA and FP are both used simultaneously, X Server almost always assigns
VGA to IGA1 and FP to IGA2.
If you only use FP, it assigns FP to IGA1, but the VGA BIOS appears to be
setting IGA2 as LVDS2's display source, hence, you do not see anything on the
screen because IGA2 is not in use.
Ever since I got involved in developing OpenChrome graphics stack (starting
roughly 3 years ago), I have extensively rewritten display mode setting code.
What the previous developers did not do very well is to proactively assign
display source for the display output type used by the end user.
It was almost always relying on VGA BIOS to set this (essentially relying on
"left over" register bits), but the problem with this approach is that it just
cannot handle standby resume since the register bits get erased when coming out
of standby.
Although I myself did not handle your case correctly in your situation due to
lack of having the actual hardware in front of me, I now think I know what is
going on, and all I will have to do is to write you a small patch that handles
Samsung NC20 netbook as a special case.
For this, I will need lspci dump to figure out the PCI subvendor ID and
subdevice ID.

lspci -vvnn > Samsung_NC20_lspci_dump.txt

I do not personally like this approach, but I already do this for Sylvania g
netbook (VX700 chipset) and Quanta IL1 netbook (VX800 chipset), so I do not
mind doing it for another hardware.
OpenChrome used to have a huge table (close to 300 entry) of known devices to
handle this, but it was not well designed (cannot really handle your situation
anyway), was a maintenance nightmare, and the approach is contrary to a good
graphics device driver programming practice, so I got rid of it.

https://cgit.freedesktop.org/openchrome/xf86-video-openchrome/commit/?id=9822064f0cf2675fbaa1390b86a83e5bdd61fbf2

There were a few side effects doing this, but as far as I know, almost all
issues are now resolved, and I think OpenChrome handles mode setting far better
today, especially standby resume.
So please provide me with the lspci dump and upload the data.
It will take a day or two for the patch to be ready.
When the patch is ready, I will give you how to test OpenChrome DDX with the
patch applied.
If the code works, I will obviously commit the code into the OpenChrome DDX
upstream repository, but variant of the code will also make it into the
upcoming OpenChrome DRM.
OpenChrome DRM will finally support KMS (Kernel Mode Setting), and considering
the lack of corporate financial backing of OpenChrome Project (several Nouveau
developers work for RedHat, one works for Intel, but uses his spare time on it,
etc.), I think this is quite an achievement.
I wrote this reply on a pretty buggy KN400 chipset laptop (Averatec 3250) with
OpenChrome DRM performing KMS.
I got Lubuntu 18.04 and Firefox 52 ESR (Extended Service Release) running on
this laptop (AMD Athlon XP does not support SSE2 instruction, hence, I need to
use Firefox 52), with two displays running (FP + VGA).
I also figured out how to get standby resume working on this really buggy
laptop (the laptop itself is not that bad hardware wise, but standby related
part of ACPI BIOS is broken, however, I found a workaround that allows me to
enter / exit standby fairly reliably).
I am trying to get OpenChrome DRM to work as reliably as the existing legacy
OpenChrome DDX's mode setting code (UMS or User Mode Setting), so any help I
can get in improving the reliability of OpenChrome is appreciated.


(In reply to sebastien from comment #11)
> ok I join dump log before and after standbye
> 
> My netbook doesn't work without vga branched with latest git version.
> With vga screen branched, flat panel and vga work before standbye
> After standbye only vga work

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--- Comment #11 from sebastien  ---
ok I join dump log before and after standbye

My netbook doesn't work without vga branched with latest git version.
With vga screen branched, flat panel and vga work before standbye
After standbye only vga work

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[Openchrome-devel] [Bug 106326] openchrome git failed on xubuntu 18.04

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--- Comment #10 from sebastien  ---
Created attachment 139299
  --> https://bugs.freedesktop.org/attachment.cgi?id=139299=edit
dump via reg after standbye

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--- Comment #8 from Kevin Brace  ---
sebastien, does the netbook work without VGA?
Can you also do a register dump for before and after standby?
Since you already built OpenChrome DDX with its debug tool, it should be fairly
easy to obtain the register dump.

(From OpenChrome DDX root directory.)
cd tools
sudo ./via_regs_dump -d > Before_standby_regs.txt
(Put the computer into standby.)
sudo ./via_regs_dump -d > After_standby_regs.txt

If you can upload the data, that might help me fix the issue since I do not own
a VX800 chipset laptop.


(In reply to sebastien from comment #7)
> its working with vga screen plugged on my netbook
> fp and vga
> 
> stanbye resume working but only vga screen work
> after resume, fp don't working

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--- Comment #7 from sebastien  ---
its working with vga screen plugged on my netbook
fp and vga

stanbye resume working but only vga screen work
after resume, fp don't working

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--- Comment #6 from Kevin Brace  ---
sebastien, does it now work w/o VGA attached to the computer? (FP only)
Does standby resume work for you? (except VT screen after standby resume)

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--- Comment #4 from sebastien  ---
Created attachment 139269
  --> https://bugs.freedesktop.org/attachment.cgi?id=139269=edit
Xorg.0.log 2 screen working

xorg.0.log, 2 screen working

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Kevin Brace  changed:

   What|Removed |Added

   Assignee|openchrome-de...@lists.free |kevinbr...@gmx.com
   |desktop.org |

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[Openchrome-devel] [Bug 106326] openchrome git failed on xubuntu 18.04

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Kevin Brace  changed:

   What|Removed |Added

 CC||openchrome-de...@lists.free
   ||desktop.org

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[Openchrome-devel] [Bug 106326] openchrome git failed on xubuntu 18.04

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--- Comment #3 from Kevin Brace  ---
Okay, it is likely that there is a regression that involves VX800 chipset flat
panel.
I did change the code because it used to detect two FPs, but now I am trying to
limit it to one FP.
I do not have Samsung NC20, so I was not able to test it.
If you can connect the computer to a VGA monitor and upload the Xorg.0.log,
that might help me understand where the code went wrong.


 (In reply to sebastien from comment #2)
> I reinstall, xserver-xorg-video-openchrome 6.0, it's working
> after i have compiled latest git version with : 
> 
> 
> ./autogen.sh --prefix=/usr --enable-debug --enable-xv-debug
> --enable-viaregtool 
> make
> make install
> 
> after reboot, xorg not working 
> 
> my hardware is a samsung nc20 (vx800)

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--- Comment #2 from sebastien  ---
I reinstall, xserver-xorg-video-openchrome 6.0, it's working
after i have compiled latest git version with : 


./autogen.sh --prefix=/usr --enable-debug --enable-xv-debug --enable-viaregtool 
make
make install

after reboot, xorg not working 

my hardware is a samsung nc20 (vx800)

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Kevin Brace  changed:

   What|Removed |Added

 CC||kevinbr...@gmx.com

--- Comment #1 from Kevin Brace  ---
Hi sebastien,

You probably did an upgrade installation of Xubuntu 18.04.
DDX ABI is not matching and this happens if the old DDX is left behind from the
previous version of the OS / X Server.
Canonical no longer installs non-KMS DDX by default since Ubuntu 16.04 LTS, so
you will likely have to install OpenChrome DDX manually, then install the
latest upstream OpenChrome DDX.
Follow the following procedure.

sudo apt-get install xserver-xorg-video-openchrome
sudo apt-get build-dep xserver-xorg-video-openchrome
("Compile and install the upstream latest code.")

You will need to rebuild the OpenChrome DDX compilation script, then compile
the DDX code.
I hope it works.

Kevin Brace
Brace Computer Laboratory blog
https://bracecomputerlab.com


(In reply to sebastien from comment #0)
> Created attachment 139233 [details]
> xorg log
> 
> I have made update with latest version of git openchrome (0 .6.174)
> the module openchrome failed to load
> 
> "(EE) openchrome: module ABI major version (20) doesn't match the server's
> version (23)
> [14.251] (II) UnloadModule: "openchrome"
> [14.251] (II) Unloading openchrome
> [14.251] (EE) Failed to load module "openchrome" (module requirement
> mismatch, 0)"

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