arm64: overlays don't get applied
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| linux-raspi2 (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
| Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
Bug Description
Impact:
Overlay files are dtb fragments that, upon boot, patch the main dtb board
file to enable Raspberry Pi hardware extension (commonly known as
Raspberry HATs) to work.
This mechanism works fine for the bionic/raspi2 kernel, but it didn't
work for the raspi2 arm64 variant since our dtb files are missing symbols
there.
This patch instruct the device tree compiler to add symbols to the dtb
files during the 'make dtbs' target, and fix the overlay patching
mechanism for bionic/raspi2 arm64.
The resulting increase in size is negligible (~30kb for the whole kernel
package).
Fix:
Apply the patch, build, install and reboot:
/boot/firmware/
...
dtoverlay=
/boot/firmware/
dwc_otg.
dmesg:
...
[ 5.157547] fb_hx8357d: module is from the staging directory, the quality is unknown, you have been warned.
[ 5.158349] fbtft_of_value: buswidth = 8
[ 5.158362] fbtft_of_value: debug = 0
[ 5.158366] fbtft_of_value: rotate = 90
[ 5.158372] fbtft_of_value: fps = 25
ubuntu@raspi64:~$ ls -la /dev/fb1
crw-rw---- 1 root video 29, 1 Jan 28 15:58 /dev/fb1
Regression risk:
We only change how the arm64 raspi2 dtbs are generated, and since we didn't produce any image using this kernel so far, the regression risk is zero.
---
| description: | updated |
| description: | updated |
| description: | updated |
| tags: | added: patch |
| Changed in linux-raspi2 (Ubuntu Bionic): | |
| status: | New → Fix Committed |
| Launchpad Janitor (janitor) wrote | #2 |
| Changed in linux-raspi2 (Ubuntu Bionic): | |
| status: | Fix Committed → Fix Released |
| Changed in linux-raspi2 (Ubuntu): | |
| status: | New → Fix Released |
This bug was fixed in the package linux-raspi2 - 4.15.0-1021.23
---------------
linux-raspi2 (4.15.0-1021.23) bionic; urgency=medium
* linux-raspi2: 4.15.0-1021.23 -proposed tracker (LP: #1787151)
* Bionic update: upstream stable patchset 2018-06-26 (LP: #1778759)
- [Config] raspi2: CONFIG_
* arm64: overlays don't get applied (LP: #1782121)
- SAUCE: arm64: dtbs: Add symbols when compiling dtb
[ Ubuntu: 4.15.0-33.36 ]
* linux: 4.15.0-33.36 -proposed tracker (LP: #1787149)
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* HP ProBook 455 G5 needs mute-led-gpio fixup (LP: #1781763)
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(LP: #1781476)
- i2c: xlp9xx: Fix issue seen when updating receive length
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I2C_
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* Please include ax88179_178a and r8152 modules in d-i udeb (LP: #1771823)
- [Config:] d-i: Add ax88179_178a and r8152 to nic-modules
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- SAUCE: (noup) zfs to 0.7.5-1ubuntu16.3
* CVE-2018-12232
- PATCH 1/1] socket: close race condition between sock_close() and
sockfs_
* CVE-2018...