Raspberry Pi Forums

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Thanks, @epoch1970, the approach described in that post helped. I now have an ultra-fast booting Pi4.

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I cloned the root partition from the sd card to an SSD. The SSD resides in an enclosure with an USB 3 interface. Copying and regular files operations work fine. Now, when I boot by pointing to the SSD partition for / the boot process is very slow and several seemingly unrelated services fail (e.g. h...

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jamesh wrote: ↑
Mon Jul 22, 2019 8:15 am
Use fbset to create a new one.

Thanks for the response. I am using fbset. That's what worked in the past. It doesn't anymore. I reported the issue on github.

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I suggest you try loading a fresh copy of that on a different SD card as the bug may have been fixed. Thanks for your comment. Even though I didn't believe that a distribution change would be an adequate measure to approach the issue I did it. I switched from a Pi 2b to a Pi 3b and set everything u...

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It also looks like a revival of this bug:

Code: Select all

[email protected] ~> fbset -depth 8 && fbset -depth 16
ioctl FBIOPUT_VSCREENINFO: Invalid argument

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I just upgraded from jessie to stretch. On boot the screen comes up normally but I cannot wake it up after putting it to sleep with "tvservice -o". The screen wakes up but only black is shown. It used to work under jessie. The syslog shows this: Jul 20 22:21:53 badboy vncserver-x11[492,root]: Consol...

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Thanks for chiming in. I‘m currently away from my Pi 4 and can‘t do further tests. Since this thread is marked as solved I recommend starting a new one.

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Hmm, it should work in both, but HDMI 0 is preferred. I'm ran into a similar issue. I cannot use HDMI0 since the width of my HDMI adapter does not allow it. On the first boot with buster my display on HDMI1 worked. After updating the display stayed off. Now, the behavior is inconsistent. Sometimes ...

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Perfect. Thank you, the 's' options work. The only remaining issue is that I cannot query the screen's state when I disable dpms. I'll experiment some more.

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Is there a way to control the original screen blanker? Is there a way to get the current state? /sys/class/backlight/rpi_backlight/bl_power doesn't seem to be related to the original screen blanking function. Currently, if I want to wake the screen without user interaction I simulate a mouse click w...

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Well, I'm back. I disabled SD card polling as discussed above. Now the panics happen again: May 4 10:48:57 localhost kernel: [420987.124314] INFO: task kworker/3:1:7047 blocked for more than 120 seconds. May 4 10:48:57 localhost kernel: [420987.124326] Tainted: G C 4.14.98-v7+ #1200 May 4 10:48:57 l...

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OK, the documentation explains that "poll_once=on" applies after boot. I'll try this and see if there are no more panics.

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I believe this only changes the behaviour of the kernel once it is running, not the boot process. It makes sense. Enabling USB boot is something that is done once and sticks, disabling SD boot for good would be undesirable for most (unless we're talking hardening, but that's something for a differe...

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rpdom wrote: ↑
Mon Apr 29, 2019 9:16 am
It's as simple as adding an entry to /boot/config.txt and rebooting.

Thanks. For clarification: the boot process still checks the SD card first, even if it is disabled and only polling gets disabled? If USB booting fails I can still pop in a working SD card?

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PeterO wrote: ↑
Mon Apr 29, 2019 9:01 am
Maybe there is a problem with the sdcard interface...

That's an interesting perspective. fstab doesn't reference any SD card partitions.

How would one disable the SD interface? How would this be reversible?

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Thanks, Peter, for the quick response. The Pi boots from a USB-connected SSD. The SSD is connected via a powered USB hub.There is no SD card in the slot.

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Every once in a while (no discernible pattern) my Pi 3B+ (4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019) starts panicking: Apr 29 10:27:43 localhost kernel: [1027157.753964] INFO: task kworker/2:1:16365 blocked for more than 120 seconds. Apr 29 10:27:43 localhost kernel: [1027157.753979] Tainte...

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Using pure USB boot on my Pi3 I am having problems with shutdown and/or reboot. Power-on booting is never an issue, but shutdown or reboot often fails with the system just hanging at the point when I would expect the shutdown to complete or reboot to start. I recently upgraded (still on Jessie, tho...

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please note you need to create the empty files using the files names in the code for this I came across your Stopwatch code and plan to adapt it to a solution with a 2.8" GPIO touch screen. It seems that simply touching the necessary files isn't enough. Would it be possible to provide an example? T...

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Cold USB booting (from no power) works, rebooting fails. Reproducible. I already activated the additional delay ('program_usb_boot_timeout=1' in config.txt) but that doesn't help. What else can I try? (Using an SD card with a cmdline that points to /dev/sda2 is my current workaround.)

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A few days ago I started putting my Pi 3s bluetooth to use and noticed a serious decrease in wifi performance. Whenever I resolve a bluetooth device's name (to check for its presence) wifi ping times to the router go up from millseconds to full seconds. ssh sessions get dropped. Test it yourself: in...

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DougieLawson wrote:GPIO Zero which doesn't need sudo access or any fiddling with permissions for /dev/mem/.

I am in a similar situation. I user a cgi-bin python script and gpiozero but the error output mentions denied access to /dev/mem (for www-data).

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A few minutes later: solved for me. The key was this comment . The library works (best/only) with a Pi 2 with version 1.40. Here's what I did (I keep my sources in ~/src): cd ~/src/bcm2835-1.36 sudo make uninstall cd ~/src wget http://www.airspayce.com/mikem/bcm2835/bcm2835-1.40.tar.gz tar -zxf bcm2...

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Not helpful, but I am in the same situation. I rewired everything twice, tried the python code that is floating around - no dice.

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gkreidl wrote:Then reinstall kodi from the repository.

Thanks!

Search found 161 matches

Re: RPI 4: issues with USB3-mounted root partition

RPI 4: issues with USB3-mounted root partition [SOLVED]

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Re: Composite screen cannot be woken up

Re: Composite screen cannot be woken up

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Re: Pi 4 Installation Issues (Solved)

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