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Kernel – 5.12-rc1 – USB-related Crash..

Adventures With Linux ™ Posted on March 1, 2021 by RGMarch 1, 2021

After running kernel 5.12-rc1 for short time, it crashed: ……………………………. usb 1-1.1.1.5: USB disconnect, device number 11 usb 1-1.1.1.5.4: USB disconnect, device number 12 cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0 BUG: kernel NULL pointer dereference, address: 0000000000000278 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) – not-present page PGD 0 P4D 0 Oops: 0000 … Continue reading →

Posted in Crash and Burn.., kernel, Linux, Opinion, USB | Tagged BUG kernel NULL pointer, crash, kernel 5.12-rc1, usb | Leave a reply

ARM64 – Odroid C2 – Patches for USB..

Adventures With Linux ™ Posted on January 18, 2017 by RGJanuary 18, 2017

Thanks to Heiner Kallweit for info on two USB patches for the Odroid C2, and thanks to John Youn for the patches themselves..  They can be found at http://www.spinics.net/lists/linux-usb/msg151687.html and http://www.spinics.net/lists/linux-usb/msg151688.html . I have applied these to Kernel 4.10-rc4 (including the Ethernet TX patch) and now USB is working, and detects/connects devices – sort of.. Plug in … Continue reading →

Posted in aarch64, ARM64, fix, Hacks, kernel, Linux / ARM, Odroid C2, Opinion, Performance | Tagged arm64, kernel, linux, odroid c2, patches, quirks, usb | 1 Reply

UDEV – Getting an Old Scanner to Behave..

Adventures With Linux ™ Posted on February 20, 2016 by RGFebruary 20, 2016

I recently acquired a vintage (2006?) Minolta Elite 5400 II scanner, and – according to the VueScan support info, I needed to ”set up libusb device protections”..   That info included a link to a somewhat ancient SANE USB support page – last changed in 2003!.. That rang a bell, and I guessed that I had to mess … Continue reading →

Posted in fix, Hacks, Linux, Opinion, Performance, success | Tagged fix, minolta 5400 ii, rules, scanner, success, udev, usb | 4 Replies

ARM – Odroid Kernel 3.17/3.18 USB Solution..

Adventures With Linux ™ Posted on November 8, 2014 by RGNovember 8, 2014

I had been trying to get USB working with 3.17 and 3.18-rc kernels on my Odroid U3 for some time, and had been looking for fixes in the source code. It turned out that I was looking in the wrong place – and a clue to this was the lack of any mention of the problem on … Continue reading →

Posted in compilation, Crash and Burn.., Hacks, kernel, Linux / ARM, Odroid, Performance, U-Boot | Tagged fix, kernel 3.18-rc, new u-boot, odroid u3, success, usb | 1 Reply

NVIDIA – A Kernel 3.13 Patch that Works..

Adventures With Linux ™ Posted on February 4, 2014 by RGFebruary 4, 2014

There have been several ‘Kernel 3.13’ patches on various sites for the latest NVIDIA drivers, and I have finally found one that – on my system – actually works, without causing uvcvideo / usb problems (see previous articles..) Thanks to the folks at ArchLinux, the patch can be found here:  https://projects.archlinux.org/svntogit/packages.git/plain/trunk/nvidia_3.13_kernel.patch?h=packages/nvidia Be aware that there are other … Continue reading →

Posted in compilation, Crash and Burn.., Hacks, kernel, Linux, NVIDIA, Opinion, Performance | Tagged archlinux, kernel 3.13 patch, nvidia 331.38, success, usb, uvcvideo | 4 Replies

Back to 3.12.8..

Adventures With Linux ™ Posted on January 22, 2014 by RGJanuary 22, 2014

After some problems with uvcvideo / usb under 3.13 producing non-working camera and audio, and producing a ‘tombstone’, I have reverted to 3.12.8 for the time being..    More research is needed, and I have set up a 3.13 ‘guest’ under VMware to conduct further tests, without the ‘kernel taint’ of NVIDIA drivers, etc.. [50677.696508] cannot submit urb … Continue reading →

Posted in compilation, Crash and Burn.., kernel, Linux, Opinion, Performance, Video | Tagged crash, kernel 3.13, no audio, tombstone, usb, uvcvideo | Leave a reply

Pi Kernel Update – 3.2.29, and an Improvement in USB?

Adventures With Linux ™ Posted on September 17, 2012 by RGSeptember 17, 2012

I have just updated the Raspberry Pi to kernel 3.2.29, from the latest Pi kernel 3.2.27 at https://github.com/raspberrypi/linux, plus the two incremental patches from ftp://ftp.kernel.org/pub/linux/kernel/v3.0/incr/ The system is OK, and USB seems to be more stable than before, even after plugging in USB1.1 devices.. Fedora release 17 (Beefy Miracle) Kernel 3.2.29-pi on an armv6l (ttyAMA0) ………. usb … Continue reading →

Posted in compilation, Fedora, Linux / ARM, Opinion, Performance, Raspberry Pi | Tagged 3.2.29, improvement, kernel, patched, raspberry pi, usb | 5 Replies

Pi USB Saga – An Embarrassing Fail.. – and a Warning!

Adventures With Linux ™ Posted on September 1, 2012 by RGSeptember 1, 2012

I had got tired of trying all the so-called ‘recommendations’ for fixing USB hub connectivity on the Raspberry Pi – including some from people who did not actually own one..   And yes, I do have the correct voltage power supply etc. etc… So – I was happy to see that there was -at least – a potential … Continue reading →

Posted in Crash and Burn.., Hacks, Opinion, Raspberry Pi | Tagged fail, hardware fix, problems, raspberry pi, resistors, usb, wrong | 6 Replies

Pi Power and Hub – It’s All About the Power Supply??.

Adventures With Linux ™ Posted on May 17, 2012 by RGMay 17, 2012

After many fruitless attempts to cobble together a working USB hub setup for the Raspberry Pi, I came to the conclusion – after trying all the USB/mains power adapters I had (from various phones and other accessories), that the power supply made a significant difference to the behaviour of the Pi..     With some adapters, I had to … Continue reading →

Posted in Crash and Burn.., Hacks, Opinion, Performance, Raspberry Pi | Tagged errors, hub, improvement, nokia, power supply, problems, raspberry pi, usb | Leave a reply

Pi – USB – The Saga Continues..

Adventures With Linux ™ Posted on May 15, 2012 by RGMay 15, 2012

Thought I would try a couple more options, just in case.. First, I confirmed that the USB sound card works connected directly to one of the Pi USB ports (using a USB extension cable): usb 1-1.2: new full speed USB device number 13 using dwc_otg usb 1-1.2: New USB device found, idVendor=0d8c, idProduct=000c usb 1-1.2: New USB … Continue reading →

Posted in Crash and Burn.., Hacks, Opinion, Raspberry Pi | Tagged grounding, hub, power supply, problems, raspberry pi, speculation, usb | 1 Reply

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