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by klesk
Tue Jun 02, 2020 3:30 pm
Forum: Troubleshooting
Topic: Pi4 ttyAMA0 not usable because GPIO 14 and 15 are set to OUTinstead of ALT0 at boot
Replies: 7
Views: 598

Re: Pi4 ttyAMA0 not usable because GPIO 14 and 15 are set to OUTinstead of ALT0 at boot

I don't know what caused this for you phal but I doubt that it was pimori because I have nothing like that installed and wasted an afternoon trying to find out why is my ttyAMA0 NOT working. [ 0.391086] fe201000.serial: ttyAMA0 at MMIO 0xfe201000 (irq = 34, base_baud = 0) is a PL011 rev2 +-----+----...
by klesk
Sat Feb 22, 2020 3:21 pm
Forum: Troubleshooting
Topic: Problems installing on a 64gb microSD
Replies: 28
Views: 18290

Re: Problems installing on a 64gb microSD

Just a sidenote I have the mentioned Samsung EVO 64. It worked fine in an RPI3 and RPI4 saw it's full capacity then I had to put it into an USB reader and all it can see is: Disk /dev/sda: 27.6 GiB, 29662117888 bytes, 57933824 sectors Disk model: Card-Reader Units: sectors of 1 * 512 = 512 bytes Sec...
by klesk
Tue Feb 18, 2020 5:50 am
Forum: Troubleshooting
Topic: Packet loss on eth0 [Raspberry Pi 4 Model B]
Replies: 28
Views: 3253

Re: Packet loss on eth0 [Raspberry Pi 4 Model B]

It does help, however not perfect, there is still a loss: 31492 packets transmitted, 31405 received, 0.276261% packet loss, time 33222ms rtt min/avg/max/mdev = 0.216/0.296/1.360/0.077 ms eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 RX packets 141567796 bytes 3003018504 (2.7 GiB) RX erro...
by klesk
Fri Feb 14, 2020 7:29 pm
Forum: Troubleshooting
Topic: Force a full fsck on reboot, ignoring the dirty flag
Replies: 23
Views: 53494

Re: Force a full fsck on reboot, ignoring the dirty flag

I would contribute my solution to this: You can add: PARTUUID=<UUID> / ext4 noatime,errors=continue 0 1 errors=continue to your fstab instead of FSCKFIX=yes. This way it will try to boot no matter how badly the filesystem is corrupted, I would say it matters more to have a headless system on a remot...
by klesk
Wed Feb 12, 2020 3:48 pm
Forum: Troubleshooting
Topic: Packet loss on eth0 [Raspberry Pi 4 Model B]
Replies: 28
Views: 3253

Re: Packet loss on eth0 [Raspberry Pi 4 Model B]

Sorry about bumping this up but I also run into a similar problem with a Raspberry PI 4. 384 packets transmitted, 363 received, 5% packet loss, time 383992ms rtt min/avg/max/mdev = 1.443/4.406/93.588/6.613 ms Just did a full upgrade on the latest Raspbian which upgraded the kernel: Linux linux 4.19....
by klesk
Fri Jan 24, 2020 4:06 pm
Forum: Beginners
Topic: Disable DHCP
Replies: 6
Views: 5235

Re: Disable DHCP

I would just note that the first response of setting static IP is better than disabling it because if you disable it you will see the ugly red X network not available indicator on the Raspbian GUI in the right corner like the connection would be broken and it cannot be removed from there either.
by klesk
Sun Oct 20, 2019 8:09 am
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

"For a server that is 24/7 online and never leaves the datacenter, full-disk encryption may be a bit useless anyway" and who said I have it in a datacenter, maybe its a mini nas what i bring with me while traveling as well. Regardless whether the data is important to protect on it or not, these days...
by klesk
Sat Oct 19, 2019 12:54 pm
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

Well without any crypto just on basic EXT4 filesystem I get: rx: 381.76 Mbit/s 36883 p/s tx: 16.73 Mbit/s 12450 p/s^C According to IOTOP a stable 30MB/s+ write on the disk which is blazingly fast without any crashes in the dmesg. Although I would note for this speed I have to use FTP, even SSH/rsync...
by klesk
Sat Oct 19, 2019 11:33 am
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

take time off his day huh? your a bad troll you know. Also think before you open your mouth, what you linked was: "benchmark/: software we used to generate the benchmarks in our paper" For the main crypto probably would need to recompile the kernel as well and I'm not fond of running python garbage...
by klesk
Sat Oct 19, 2019 8:07 am
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

Ok so following: http://longsteve.com/wiki/index.php/USB_Hard_Drive_Encryption_on_a_Raspberry_Pi I have recrypted the drive with: cryptsetup --verify-passphrase luksFormat /dev/sda1 -c aes -s 256 -h sha256 and used EXT4 inside as suggested and guess what happened? It solved absolutely nothing, I was...
by klesk
Thu Oct 17, 2019 11:00 am
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

Yes I forget to tell about that I do have full disk encryption and I do use XFS and I don't want to switch any of it. The aes-xts-plan64 is suck on Pi: cryptsetup benchmark # Algorithm | Key | Encryption | Decryption aes-xts 256b 91,5 MiB/s 81,8 MiB/s aes-xts 512b 70,8 MiB/s 61,9 MiB/s If you want ...
by klesk
Tue Oct 15, 2019 11:38 am
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

Yes I forget to tell about that I do have full disk encryption and I do use XFS and I don't want to switch any of it. This seems a pure software issue for me which should be fixable from the firmware or linux kernel. So Today for example managed to reset the PI4 again with just copying a lot of smal...
by klesk
Sat Oct 12, 2019 2:44 pm
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

Ah silly me, I should've noticed that there is even a later upgrade as you suggested. However sadly even after upgrading to: Linux raspi4 4.19.75-v7l+ #1270 SMP Tue Sep 24 18:51:41 BST 2019 armv7l GNU/Linux The problem still persist. Somehow I don't trust in these "magical" upgrades :( I hope devs w...
by klesk
Sat Oct 12, 2019 8:05 am
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Re: Raspi 4 file server disappointing transfer speed, degradation and segfaults

And on top of this the CPU temperature with 2 alu blocks on it in idle is around 50C, the OPI was on 40C. I start feeling this upgrade does not worth it, however I get slightly better VPN performance, while with the opi the tunnel tops out around 30-40mbit, the raspi4 can do 60-70mbit/s in tun mode ...
by klesk
Fri Oct 11, 2019 11:54 am
Forum: General discussion
Topic: Raspi 4 file server disappointing transfer speed, degradation and segfaults
Replies: 50
Views: 5057

Raspi 4 file server disappointing transfer speed, degradation and segfaults

Hello, So I had an Orange PI PC for many years with a 2TB Seagate HDD attached to it. The HDD supports USB3, the Opi didn't. My PI4 currently runs the latest and greatest: Linux raspi4 4.19.66-v7l+ #1253 SMP Thu Aug 15 12:02:08 BST 2019 armv7l GNU/Linux No LSB modules are available. Distributor ID: ...
by klesk
Wed Jun 27, 2018 9:25 pm
Forum: Camera board
Topic: Raspi 8MP Cam Motion Detection PI2 vs PI3
Replies: 0
Views: 309

Raspi 8MP Cam Motion Detection PI2 vs PI3

I had a Raspi 2 v1.2 running since a year with an 8MP camera. The camera is inside looking into a narrow hallway. Unfortunately the board died and I had to swap it to a Raspi 3 (not the latest 3B). Anyone who test the 2 boards side by side with camera noticed a difference in the motion detection? On...
by klesk
Tue Jan 30, 2018 4:09 pm
Forum: Advanced users
Topic: :oops: Simple Cronjob Causes Rpi2 to Crash and Burn :oops:
Replies: 2
Views: 482

:oops: Simple Cronjob Causes Rpi2 to Crash and Burn :oops:

I'm not here for cursing about this product, obviously you will not run a nuclear power plant from your pi. It was not made to be as reliable as a PC104 or other industrial micros are, BUT this one pissed me off to a level that I feel I have to share my experiences. With multiple raspberry pi 2s and...
by klesk
Tue Aug 08, 2017 7:57 am
Forum: Camera board
Topic: [MOTION] Overexposure using YUV format
Replies: 17
Views: 2695

[MOTION] Overexposure using YUV format

Hello, I have a brand new 8MP raspi v2.1 camera. I had good experience with these indoors using motion so I bought one for outdoors (it's built into a case). I deal with over exposure, too bright images such as: https://publiclab.org/system/images/photos/000/006/083/large/thumb.jpg https://publiclab...

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