tux7350

joined 2 years ago
[–] tux7350@lemmy.world 3 points 2 days ago

I cant code to save my life but I cobbled together my asus laptop and got the sound working. Due to an extra AMP, I had to patch the SSDT. I found a thread on how to do it on another laptop then found the idenifier for my laptop and patched it in. The laptop had just been released, so I went to the discord and pasted a how to.

The repo owner reached out to me and asked me if I could provide a couple of other identifiers, they were so incredibly friendly! I had never done something like this before and they greatfully created a better patch and submitted it upstream.

It was super awesome to have someone help me and ensure that the work was pushed out so other people could use it. 10/10 would contribute to the Asus on Linux project any day!!

[–] tux7350@lemmy.world 2 points 4 days ago (1 children)

Naw, people are people no matter the situation. If you were an asshole before you join it's not like you'll just not be an asshole. You gotta make a choice to change and some people absolutely don't take that path.

And you'd be surprised what people will do knowing the consequences. Some people really just don't give a fuck lol

For example, while on restriction for getting a dui, one guy was told to clean the company commanders office. Took that as an opportunity to stand on the officers desk with a mop and cartoonishly slosh water over all his paperwork / mop the computer ect ect. He only got 30 more days of restrictions for that.

Feel free to ask me whatever if you're curious.

[–] tux7350@lemmy.world 2 points 1 week ago (1 children)

Well if it was for a tech job im sure you could've shown off some troubleshooting skills haha

And the ArchWiki link is perfect. Ill read up on that and ensure I'm using it correctly. Thank you very much for the pointer kind stranger! :)

[–] tux7350@lemmy.world 1 points 1 week ago (3 children)

I'll ask! How do you know? Lol

All jokes aside, I think this might really help me with a side project I've been working on. Ive been trying to get full disk encryption working on a NanoPi R6S running NixOS. The issue that im having is that im not sure exactly what modules I need in the initrd. When I boot, there is no output on the display after systemd-boot shows.

The manufacturer puts out a version of Ubuntu thats works flawlessly so I know its possible. But I'll pass on the snaps and id rather not use uboot. System is working with edk2 and nixos.

Long story short, will this software allow me to figure out what is running in the manufacturer's kernel and port it over?

[–] tux7350@lemmy.world 1 points 1 week ago

Yeah, unfortunately thats how I started to pin it down to that pci multiport serial card. Only sometimes if you unplug that cable does the system turn back on. Oddly, removing the cable doesnt always solve the problem. Sometime the system will boot right but up and everything works just fine. Other times it will turn on, but windows will throw a driver error on the serial card.

The common factor tho, is that when they computer is shipped back, it will start working again. Very frustrating haha I appreciate the response as well!

[–] tux7350@lemmy.world 1 points 1 week ago (1 children)

So you can just run kexec if its installed on the distro. This tells the kernel to boot into another kernel. The reason to use it with systemctl is to properly shut down all the services running in userspace. That command will have systemd gracefully turn off all services and then the new kernel with whatever updates / modules can be loaded in a clean environment.

Its useful if say, you have a VM in a data center. Now most of them provide a web gui where you can turn your VM off and then on. But if you're lazy like me and already remoted into the terminal lol

[–] tux7350@lemmy.world 1 points 1 week ago

Should have been more clear about the remote part. The systems operate remotely from me, I can access them via the internet. The users need to use the screen to operate it. This is just a windows 11 computer after all.

As for the router information, thats part of the reason I know there is power to the entire thing. I can access the router page and see that the link speed was negotiated correctly, at 1gb per second. If they unplug the ethernet, the port reads disconnected.

But 0 packets are getting sent from the computer. I believe those are ARP, but the router page doesnt define it. Just has a table with packets in and packets out. Packets going in will usually have a couple from the router. Always 0 with packets coming out. Theres actually a ping function built into the router, and that doesnt respond at all.

BIOS is not setup during boot to use any sort of networking. No PXE boot or anything like that. On this particular motherboard, you have to enable the network stack, so I dont think its that. System is setup to always turn on when power is applied to bring all the other components online together.

Anyway, thanks for taking time out of your day to respond!

[–] tux7350@lemmy.world 1 points 1 week ago

Power to all components is provided through a dedicated power supply. If the computer was on, I would be able to get direct readout of voltage and amperage. As for the serial ports, some devices use RS232 and some use RS485.

The ground loop certainly seems to be the most plausible cause. And when its in the shop I've got exact replicas of the system. I just cant seem to replicate it no matter how hard I try.

For context, Ive stuck a system in a fridge to see if possibly cold temperatures correlate and was still unsuccessful. At this point I wonder if there is interference coming from an outside source and thats why I cant pin it down.

You've given me a lot to think about! I greatly appreciate the responses.

[–] tux7350@lemmy.world 1 points 1 week ago (2 children)

sit there with a black screen after turning on and not reaching the windows bootloader

Were you able to access the BIOS? We're unable to access the bios when the computer stops working.

Also, even more frustering, we have a dedicated power supply to run the whole operation. If the system was able to turn on, I could read the voltages and amps going into the system. Weve swapped out the power supplies as well but that doesnt seem to resolve the issue.

[–] tux7350@lemmy.world 0 points 1 week ago (3 children)

Now that is an interesting idea. I cant go into to much detail about the exact components but this particular port drives a DC motor. Power is injected to drive the motor.

Tbh, im not very familiar with ground loops. Have you had experiences with ground loops before?

I appreciate the quick response as well!

[–] tux7350@lemmy.world -1 points 1 week ago (3 children)

I dont mean to be rude but I dont think thats relevant without doxxing myself. You can look at my post history to know that I'm in the US and my computers are as well. They are far enough that I cannot travel to them.

 

Hi all,

Ive got a reoccurring issue that has been effecting a couple of dedicated machines that operate remotely. Users are reporting that their systems are unable to turn on. Walking them through the troubleshooting, there is no issues with the monitor. Power is being applied, the system lights turn on. We can confirm the network activity lights on the LAN port and the router has negotiated a link speed. But if we log into the router, we see no packets coming from the PC.

Now, the weird part. When the computer is shipped back, it magically starts working again. Ive tried running a memtest to see if maybe its bad ram, but it always comes back passed. I believe the issue is due to a multiport pci serial card. Sometimes if the cable is removed that connects to that pci, the system will boot. Other times, it completely kills the pc. Until of course it gets shipped back, then it will work again.

Ive really hit a dead end with this issue. Im not sure how to diagnose a no post situation without physically being there. At the very least, I wish I could replicate the issue in person. Unfortunately, the issue is occurring with multiple computers and pci cards. Doubtful its a one off bad piece of hardware.

If anyone has any experience troubleshooting a no post situation remotely or has had issues with pci cards, I'd really appreciate it!

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