| === chihchun_afk is now known as chihchun | ||
| === chihchun is now known as chihchun_afk | ||
| === chihchun_afk is now known as chihchun | ||
| flexiondotorg | ogra_, I was at a Rasspberry Jam yesterday. | 07:36 |
|---|---|---|
| flexiondotorg | I have a preview or Ubuntu MATE 15.10 and we also played with Ubuntu Snappy. | 07:36 |
| flexiondotorg | ogra_, The feedback about Ubuntu Snappy is that without firmware and VideoCore drivers/utilities it is limited. | 07:37 |
| flexiondotorg | ogra_, I have this issue with Ubuntu MATE 15.10 right now too. | 07:37 |
| flexiondotorg | Because the 15.10 kernel is 4.2 and Rpi2 firmware is only available for kernel 4.1 and 3.18. | 07:38 |
| ogra_ | flexiondotorg, well, there are plans to make the KMS/DRM driver work | 07:39 |
| flexiondotorg | I'd like to work on getting the Pi2 better supported on Ubuntu. | 07:39 |
| ogra_ | but that wont get you the same features the closed driver will | 07:39 |
| flexiondotorg | flexiondotorg, Are you referring to the accelerate DDX? | 07:39 |
| ogra_ | no, i'm referring to the opensource one | 07:40 |
| flexiondotorg | ogra_, Just want to clarify what you mean. | 07:40 |
| flexiondotorg | Do you mean fbturbo? | 07:40 |
| ogra_ | i dont know how it is called, afaik there is an opensource KMS capable driver, but that only does 2D accel | 07:41 |
| flexiondotorg | Or this - https://github.com/Factoid/xf86-video-rpi | 07:41 |
| ogra_ | it should work with the KMS xorg driver | 07:41 |
| flexiondotorg | ogra_, So the issue is this. | 07:41 |
| flexiondotorg | The pi2 without firmware, much of the hardware is simply not enabled. | 07:42 |
| flexiondotorg | Some missing i2c, sound and accessible to video acceleration. | 07:42 |
| ogra_ | do you use the right DTB overlays in your install ? | 07:42 |
| flexiondotorg | ogra_, Well, this is an interesting question. | 07:42 |
| ogra_ | i2c is definitely enabled by default in our snappy install | 07:42 |
| flexiondotorg | ogra_, My understanding is that the Rpi2 firmware is required to enable those devices though. | 07:43 |
| flexiondotorg | Which DTB are you using and how have you enabled it? | 07:43 |
| ogra_ | we use the default DTB only but allow enablin the overlays ... the default one includes SPI, I2C and I2S support that cou can switch on or off with a dt parameter in config.txt | 07:45 |
| ogra_ | and we ship a set of overlays you can use to en/disable the other devices http://paste.ubuntu.com/12761947/ | 07:46 |
| flexiondotorg | ogra_, OK. So what "installs" those overlays for Snappy? | 07:47 |
| flexiondotorg | Are you are using uboot in Snappy? | 07:47 |
| ogra_ | the kernel package | 07:47 |
| ogra_ | we chainload uboot from the binary bootloader | 07:47 |
| flexiondotorg | Ah, right. | 07:47 |
| ogra_ | the DT config has to happen in the binary bootloader config.txt though | 07:48 |
| flexiondotorg | Yes. | 07:48 |
| ogra_ | uboot can only read it from ram, it cant apply it to the kernel during boot (sadly a limitation of the rpi port) | 07:48 |
| ogra_ | the dtbs come with your kernel packae under /lib/firmware | 07:49 |
| ogra_ | copy them to the overlays directory in your bootloader setup and config.txt can see them | 07:49 |
| flexiondotorg | ogra_, OK, that is interesting. | 07:50 |
| flexiondotorg | I'll take a look at the linux-rpi2 source packages to better understand the above. | 07:50 |
| ogra_ | you dont need the "firmware" (whatever people mean when saying that) to bring up devices ... | 07:51 |
| flexiondotorg | I was thinking of making a PPA with some packages to provide the firmware but that maynot be required. | 07:51 |
| flexiondotorg | Hah ^^^ :-) | 07:51 |
| flexiondotorg | But I do need the VideoCore device to be available, which currently it is not. | 07:52 |
| ogra_ | the onlly "firmware" is the binary blob (start.elf, fixup.dat) ... everything past this is kernel | 07:52 |
| ogra_ | and shits firmware is the binary blob for the graphics driver, with some bootloader code added | 07:53 |
| ogra_ | s/hits/this/ ... tsk | 07:53 |
| ogra_ | (freudian slip :P ) | 07:53 |
| flexiondotorg | OK, so I need to figure out why the VideoCore device is not acceeible then. | 07:53 |
| flexiondotorg | OK, thanks for the pointers. | 07:54 |
| flexiondotorg | I'll see what I can figure out. | 07:54 |
| flexiondotorg | ogra_, Which source package is providing the firmware for the rpi2? | 07:55 |
| ogra_ | the pi2.snap from the store | 07:56 |
| flexiondotorg | ogra_, Ah. | 07:57 |
| flexiondotorg | That firmware is not in the Debian packages/ | 07:57 |
| flexiondotorg | ? | 07:57 |
| ogra_ | http://people.canonical.com/~platform/snappy/raspberrypi2/ has a copy ... (you can unpack snaps with "dpkg-deb -x /path/to/snap ./unpack") | 07:57 |
| ogra_ | no, the oem snaps usually dont have a deb equivalent | 07:57 |
| ogra_ | (and many normal snaps dont have either ... snappy can use debs but doesnt need to, in fact the expectation is that people build upstream trees directly for it ) | 07:58 |
| flexiondotorg | ogra_, Understood. | 08:00 |
| flexiondotorg | We were talking a cross purposes. My mistake. | 08:00 |
| flexiondotorg | Ubuntu MATE 15.10 is not snap based. | 08:00 |
| ogra_ | i know | 08:00 |
| flexiondotorg | I'm using the linux-raspi2 package. | 08:00 |
| flexiondotorg | In a traditional Debian setup. | 08:00 |
| ogra_ | right | 08:01 |
| ogra_ | so you need to find a bootloader setup that works | 08:01 |
| ogra_ | and integrates properly with the kernel bits ... i.e. your installer shoudl copy the overlay bits into the right place | 08:01 |
| flexiondotorg | So, I have a bootable image. | 08:02 |
| flexiondotorg | With X and Ubuntu MATE working. | 08:02 |
| flexiondotorg | Just missing something for some devices. | 08:02 |
| flexiondotorg | I'm pulling down that snap and having a look. | 08:03 |
| ogra_ | well, you are most likely using the dtb from the bootloaer that you got "somewhere" ... | 08:03 |
| ogra_ | which means nearly no devices will work at all because the dtb is kernel specific | 08:03 |
| flexiondotorg | This is where I run out of rope. | 08:04 |
| ogra_ | (RaspberryPi2)ubuntu@localhost:~$ ls /lib/firmware/4.2.0-1008-raspi2/device-tree/ | 08:04 |
| ogra_ | bcm2709-rpi-2-b.dtb overlays | 08:04 |
| flexiondotorg | I'm not sure if the issue I am facing is because of the mismatch between Linux 4.2 (in 15.10) and the DTBs provided by Raspberry pi foundation that are for Linux 4.1. | 08:04 |
| ogra_ | you want to have the content of this sitting in the dir of your bootloader (likely some vfat partition on your SD) | 08:05 |
| flexiondotorg | Perfect! | 08:05 |
| flexiondotorg | I'll give that a shot. | 08:05 |
| ogra_ | just replace the stuff | 08:05 |
| flexiondotorg | Is the content of /lib/firmware/4.2.0-1008-raspi2/device-tree/ to same as I am seeing in pi2_0.16_all.snap boot-assets? | 08:07 |
| flexiondotorg | *the same as? | 08:07 |
| flexiondotorg | Because if so, I'll integrate that snap into my build. | 08:07 |
| flexiondotorg | I'd like to align with the snappy stuff as much as possible. | 08:08 |
| flexiondotorg | ogra_, This short thread is why I thought (and am still not sure) that the Raspi firmware and kernel version mismatch affect VideoCore enablement - https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=120977 | 08:23 |
| flexiondotorg | ogra_, And this ;-) | 08:29 |
| flexiondotorg | https://bugs.launchpad.net/snappy/+bug/1500755 | 08:29 |
| ogra_ | flexiondotorg, well, thats most likely a question of enabling it in the kernel config (it seems all you need is the right module) | 08:32 |
| flexiondotorg | Which is closed source :-( | 08:34 |
| === chihchun is now known as chihchun_afk | ||
| Guest47548 | hello everyone, could anyone please give me some help, i don't know if i broke my microsd or not, i was trying to dd write a .raw file to a microsd card then it didn't work, something went wrong and it says my 16gb card only has 8mb (unllocated) | 11:47 |
| === chihchun_afk is now known as chihchun | ||
| === chihchun is now known as chihchun_afk | ||
| regum | hello everyone | 21:03 |
| regum | I was wondering if anyone has had any success in installing ROS on Ubuntu 15 (arm) | 21:03 |
| mijk | Is it possible to stream Steam to an ARM machine? | 22:26 |
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