Display corruption with Kernel 5.10 and 5.12

AmigaOne X5000 platform specific issues related to Linux only.
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xeno74
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Re: Display corruption with Kernel 5.10 and 5.12

Post by xeno74 »

Roland wrote: Mon Nov 22, 2021 9:20 pm You seem to have forgotten that...
The issues of your X5000 are very strange and only your X5000 is affected. Why?

Bisecting is very time consuming and we have to explain the kernel developers what the issue is. If it is a hardware issue then the bisecting was for nothing and we have lost a lot of time.

It is really important, that you test very carefully and you can rule out a hardware problem.

Please also test the RC2 of kernel 5.16. I'd like to know if this issue still exists.
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Roland
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Re: Display corruption with Kernel 5.10 and 5.12

Post by Roland »

xeno74 wrote: Mon Nov 22, 2021 9:41 pm
The issues of your X5000 are very strange and only your X5000 is affected. Why?

Bisecting is very time consuming and we have to explain the kernel developers what the issue is. If it is a hardware issue then the bisecting was for nothing and we have lost a lot of time.

It is really important, that you test very carefully and you can rule out a hardware problem.
I do not quite understand what you mean here with 'hardware problem' and how to 'rule it out'? This is definitely not a problem of Cyrys board as I have used two different ones!

And IF it is a pure hardware problem, why is it seen only with the newer kernels? In my understanding this is an incompatibility issue with the driver of a certain hardware expansion with the newest kernels, as suggested the fact that the problem dissappeared when the MEM=3500M parameter was used, as well as when I used a different set of expansion cards. Have you forgotten that...? But all these cards I have used are functional, and work also with AmigaOS.
Please also test the RC2 of kernel 5.16. I'd like to know if this issue still exists.
Done... The problem is there! Got it again immediately when I started to stream with VLC. The video is blinking vildly, mixing the video and pink color. Just like with rb2.... And not any sign of that with rb3 or rb4 so far, but will still try with rb4.

PS, If you think this problem takes too much of your time, please tell it now... We can then drop this testing immediately, and I wiill try to solve my problems myself! I already regret I told about this issue here...:-(
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xeno74
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Re: Display corruption with Kernel 5.10 and 5.12

Post by xeno74 »

Which cards are installed in your X5000 currently?

Please test the kernel without these cards. I'd like to know which card is the problem. After that, we can create a bug report for this hardware. I think it is one of the cards because no one has the same issues.
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xeno74
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Re: Display corruption with Kernel 5.10 and 5.12

Post by xeno74 »

Sometimes the hardware configuration isn’t correct. I have always an issue with my BTTV TV card if I install a Linux distribution but it isn’t a kernel issue. It’s not correct configured.

Link: Fedora 27/28 Server PPC64

If we know the problematic card then maybe we can configure it correctly.
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Roland
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Re: Display corruption with Kernel 5.10 and 5.12

Post by Roland »

xeno74 wrote: Tue Nov 23, 2021 6:45 am Which cards are installed in your X5000 currently?
These:
Radeon HD 5450
Dawicontrol DC-2976 UW SCSI controller (PCI)
SoundBlaster Live! SB0060 (PCI)
RTL 3468 1G ethernet (PCIe)
Delock 90393 - 2 port SATA3 with RAID (PCIe)

At least Soundblaster Live! and RTL 3468 cards has been used also by other X5000 users, so they are the least suspect ones.
Please test the kernel without these cards. I'd like to know which card is the problem. After that, we can create a bug report for this hardware. I think it is one of the cards because no one has the same issues.
Ok... I started with the Dawicontrol as it is the oldest one. I immediately got the 'type 2' issue (by running a video in VLC and downloading with Youtube-dl), but have to wait to see whether other problems appear, too.
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xeno74
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Re: Display corruption with Kernel 5.10 and 5.12

Post by xeno74 »

Roland wrote: Tue Nov 23, 2021 2:27 pm Ok... I started with the Dawicontrol as it is the oldest one. I immediately got the 'type 2' issue (by running a video in VLC and downloading with Youtube-dl), but have to wait to see whether other problems appear, too.
What about without the Dawicontrol SCSI controller? Do you have the issues if the Dawicontrol SCSI controller isn't installed?

Thanks for testing! :-)
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Roland
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Re: Display corruption with Kernel 5.10 and 5.12

Post by Roland »

xeno74 wrote: Tue Nov 23, 2021 5:19 pm What about without the Dawicontrol SCSI controller? Do you have the issues if the Dawicontrol SCSI controller isn't installed?
Sorry, I explained inaccurately.... The result WAS without Dawicontrol, I removed it first. I cannot 'empty' my machine totally for a long period as I need it daily and do not have replacement cards here.
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xeno74
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Re: Display corruption with Kernel 5.10 and 5.12

Post by xeno74 »

Could you please remove the SoundBlaster Live! and test it again? If it is the SoundBlaster Live! then we can create a bug report.
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Re: Display corruption with Kernel 5.10 and 5.12

Post by Roland »

xeno74 wrote: Wed Nov 24, 2021 7:43 am Could you please remove the SoundBlaster Live! and test it again? If it is the SoundBlaster Live! then we can create a bug report.
I stripped now my machine down, one card after another, and tested for the type 2 issue... The result was surpricing: the issue was still present even if ALL PCI/PCIe cards were removed, and 100% reproducible with the kernel 5.10! That leaves only the graphics board... But I have not currently any other Radeon cards here, so I cannot test it now.

I tested also quickly 5.5, 5.9 and 5.16 but could not get this issue with the first trial. Did not try further as the problem was anyway so clearly visible with 5.10.

Here is my exact test arrangement (with kernel 5.10, MintPPC and VLC 3.0.11):

1. Open VLC and run 720p video from hard disk (in 'window' mode).
2. Open a terminal window and 'cd' to a suitable disk/folder.
3. Run Youtube-dl with this command:

Code: Select all

youtube-dl -f 720p https://www.ccma.cat/tv3/alacarta/programa/women-series-primera-cursa-austria/video/6108343/
4. Place the terminal window partly over the bottom side of the VLC window.
5. Wait for a couple of minutes, and then start moving the terminal window around.
6. A graphical mess, and sometimes a total freezing follows...

As said, this procedure reproduced the issue every time with kernel 5.10.

(Sometimes I also opened Interweb and hided it, but this seemed not be necessary for the issue to appear).

Testing the original type 1 issue needs more time...
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xeno74
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Re: Display corruption with Kernel 5.10 and 5.12

Post by xeno74 »

Roland wrote: Wed Nov 24, 2021 12:16 pm That leaves only the graphics board... But I have not currently any other Radeon cards here, so I cannot test it now.
Hi Roland,

Many thanks for testing! :-) It's a surprise, that the graphics card is the issue. The Radeon HD 5450 is a good graphics card for weak AmigaOnes like the A1222 but for your X5000 it is better to use a Radeon HD6870 or 6970. I think you should test another graphics card.

I will also test youtube-dl in the next weeks.

Because of the bisecting. You're right that I don't have enough time. If I could, I would do more. I work as a Linux Administrator in my main job and this is time-intensive too. It's too much. You're right. We need more than 24 hours per day.
Sorry that I promise more than I can do.

Cheers,
Christian
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Running Linux on AmigaONEs can require some tinkering.
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