406
Blackbird / Re: How many fans per FAN header?
« on: June 12, 2020, 01:50:13 am »
I would like to let everyone know that there is no issue of chaining three Noctua NF-A6x25 (PWM version) fans in one header.
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407
User Zone / Re: Crackling sound with Kernel 5.6.x
« on: June 10, 2020, 10:30:19 pm »I have a problem with kernel 5.6 and sound output over a Navi RX 5500 GPU. It's a rustle/ distortion gets worse with echo. The whole thing disappears then becomes and then reappears. Sounds similar to speech-dispatcher being activated. But I have already deleted this one.
With kernel 5.4 this problem does not occur. Is the problem perhaps already known or how can I localize the problem?
dmesg output
Kernel 5.4: https://pastebin.com/H5F3VK3W
Kernel 5.6: https://pastebin.com/gnTv63NG
I used to have the same issue with my AMD Vega 64 card when I was on Kernel 5.4 (Fedora 32 Rawhide). The problem's gone away after upgrading to kernel 5.6.
408
General Discussion / Re: AMD Radeon R9 Nano
« on: June 10, 2020, 10:27:38 pm »Remove the black housing. There is only one screw. Flip the fan, mounting the black housing back.
Yes, I have done that. However I am still not happy with the outcome. Now all the hot air from the GPU gets suck into the CPU fan.
409
General Discussion / Re: AMD Radeon R9 Nano
« on: June 10, 2020, 08:53:08 am »any reason to have your CPU fan blow hot air straight down into the GPU?
Thanks for pointing that out. I am still learning how to change the fan direction.
410
Blackbird / Re: Schematic of the back I/O shield plate
« on: June 10, 2020, 03:19:41 am »
It is all good. After few trials, I have finally get the schematic right with hand measurement
411
Blackbird / Schematic of the back I/O shield plate
« on: June 09, 2020, 09:34:16 am »
To Raptor CS staff
I would like to ask if where I could find the CAD schematic of the I/O shield of the Blackbird? I am planning to mod the I/O shield to make it perfectly fit my PC case. I could do the hand measurement but I think it won't be as accurate as the original schematic.
Many thanks in advance
I would like to ask if where I could find the CAD schematic of the I/O shield of the Blackbird? I am planning to mod the I/O shield to make it perfectly fit my PC case. I could do the hand measurement but I think it won't be as accurate as the original schematic.
Many thanks in advance
412
General Discussion / Re: AMD Radeon R9 Nano
« on: June 03, 2020, 12:26:07 am »
I also tested to see if Fiji firmware could be loaded correctly under Petitboot. The good news is it works when the Petitboot kicks in. However I did not get any video output in the earlier stage. Wondering if anyone could point me to where I could find more details on that issue?
413
General Discussion / AMD Radeon R9 Nano
« on: June 02, 2020, 11:17:06 pm »
I've just replaced my AMD Radeon Vega 64 with the old AMD Radeon R9 Nano. I was considering the Pro WX 7100 card but decided not to go with that because of $.
The R9 Nano is much smaller in form factor and thus produces less heat. R9 Nano does not support H265 decoding. For now I could live with that as long as I could watch YouTube and play 3D open sourced games.
The card is fully compatible with amdgpu driver if the kernel is compiled with 4k pages (CONFIG_PPC_4K_PAGES=y in KConfig). However it is known to have issue with kernel which has 64K pages (CONFIG_PPC_64K_PAGES=y in KConfig), from my finding the 5.6.x, 5.10.x (from 5.10.7), 5.11.x (from 5.11.12) are the only two that have no issue with 64K page size.
Because Fedora Linux ships with 64K page size kernels. It has become common issue that the community is proposing to Fedora team to prepare 4K page size kernel for Fedora 35
I have to disable the onboard VGA and remove the AST GPU Xorg config snippet and let the Linux driver auto-detect my screen settings.
As you could see in the photo, the 8X PCI-E NVMe adapter card is so close to the GPU fan, I don't think it is ideal for heat dissipation.
EDIT: 5.19.4 with 64k or 4k pagesize works fine
UPDATE: 6.0.6 with 64k or 4k pagesize works perfectly
The R9 Nano is much smaller in form factor and thus produces less heat. R9 Nano does not support H265 decoding. For now I could live with that as long as I could watch YouTube and play 3D open sourced games.
The card is fully compatible with amdgpu driver if the kernel is compiled with 4k pages (CONFIG_PPC_4K_PAGES=y in KConfig). However it is known to have issue with kernel which has 64K pages (CONFIG_PPC_64K_PAGES=y in KConfig), from my finding the 5.6.x, 5.10.x (from 5.10.7), 5.11.x (from 5.11.12) are the only two that have no issue with 64K page size.
Because Fedora Linux ships with 64K page size kernels. It has become common issue that the community is proposing to Fedora team to prepare 4K page size kernel for Fedora 35
I have to disable the onboard VGA and remove the AST GPU Xorg config snippet and let the Linux driver auto-detect my screen settings.
As you could see in the photo, the 8X PCI-E NVMe adapter card is so close to the GPU fan, I don't think it is ideal for heat dissipation.
EDIT: 5.19.4 with 64k or 4k pagesize works fine
UPDATE: 6.0.6 with 64k or 4k pagesize works perfectly
414
Applications and Porting / Re: [DEV] Porting homebrew to Linux ppc64le
« on: May 28, 2020, 07:32:19 am »
I have made progress with this port with more formula binaries, for example gcc. It is now much easier for everyone to give it a try 
415
General Discussion / Re: [Guide] How to install TP-LINK TL-WN725N V2 Wifi dongle on Fedora 32
« on: May 27, 2020, 08:33:55 pm »I had some trouble with a wired Ethernet dongle earlier. It wouldn't come up in Petitboot, so it didn't come up (automatically) in Fedora until I hotplugged it. Does this have that issue?
Which product are you using? I do not have the similar issue with this dongle.
416
General Discussion / Re: noise levels, sound dampening, tempered glass cases
« on: May 27, 2020, 08:33:01 pm »
I have been running the BB on top of a test bench. On full load, the fan could produce 38 to 43dB which is quite okay IMHO. On idle it is very silent (< 10dB)
417
Applications and Porting / [OS] Fedora Silverblue download link
« on: May 26, 2020, 10:02:45 am »
Fedora Silverblue OS supports ppc64le however they did not update their website with download link.
After my PR https://github.com/fedora-silverblue/silverblue-site/pull/83 is merged, you would be able to find the ISO from download page.
After my PR https://github.com/fedora-silverblue/silverblue-site/pull/83 is merged, you would be able to find the ISO from download page.
418
Blackbird / Re: How many fans per FAN header?
« on: May 23, 2020, 10:22:08 am »
Thanks for everyone's response.
I would not risk hooking up cheap fans into one same fan header nor having a total of more than 1A (from what I read 1A is a safe threshold...).
Alternatively like surf has suggested, I could use the PSU to power my fans instead, I guess it would be much safer.
I would not risk hooking up cheap fans into one same fan header nor having a total of more than 1A (from what I read 1A is a safe threshold...).
Alternatively like surf has suggested, I could use the PSU to power my fans instead, I guess it would be much safer.
419
Blackbird / [FEEDBACK] Failed to boot if J10116 pin header touches the card on 8X slot
« on: May 22, 2020, 06:52:48 am »
Today I learn that my motherboard would refuse to boot up if the J10116 pin touch any metal part of any card on the PCI-E 8X slot. I think J10116 header should be moved to different position to avoid such contact.
420
Blackbird / How many fans per FAN header?
« on: May 20, 2020, 10:41:48 am »
I am planning to revamp my chassis cooling so I am wondering how many fans could I split from one fan header? There is no mentioning how many amps per fan header in the service manual btw.
Much thanks in advance
Much thanks in advance
