Medion Lifetab S9714 (medion-kai): Difference between revisions
Appearance
Bonsaiblue (talk | contribs) adding section about wifi |
m gitlab.com -> gitlab.postmarketos.org (bot edit) |
||
(29 intermediate revisions by 9 users not shown) | |||
Line 1: | Line 1: | ||
{{Infobox device | {{Infobox device | ||
| manufacturer = | | manufacturer = Medion | ||
| vendor = Medion | | vendor = Medion | ||
| name = | | name = Lifetab S9714 | ||
| codename = medion-kai | | codename = medion-kai | ||
| image = File:Medion-kai.jpg | | image = File:Medion-kai.jpg | ||
| imagecaption = | | imagecaption = Lifetab S9714 | ||
| releaseyear = 2012 | | releaseyear = 2012 | ||
| originalsoftware = Android 4.0 | | originalsoftware = Android | ||
| chipset = | | originalversion = 4.0 | ||
| cpu = | | extendedversion = 4.1 | ||
| gpu = | | chipset = Nvidia Tegra 3 (T30L) | ||
| cpu = Quad-Core 1.2 GHz | |||
| gpu = Ultra Low Power GeForce | |||
| storage = 32 GB internal storage | | storage = 32 GB internal storage | ||
| display = 1280 x 800 touchscreen | | display = 1280 x 800 touchscreen | ||
| memory = 1 GB | | memory = 1 GB | ||
| architecture = armv7 | | architecture = armv7 | ||
| type = Tablet | |||
<!-- the following status_* questions should be answered with Y - yes, P - partial, N - no, or left blank (for untested or unknown) --> | <!-- the following status_* questions should be answered with Y - yes, P - partial, N - no, or left blank (for untested or unknown) --> | ||
| status_usbnet = Y | | status_usbnet = Y | ||
Line 20: | Line 23: | ||
| status_touch = Y | | status_touch = Y | ||
| status_screen = Y | | status_screen = Y | ||
| status_wifi = | | status_wifi = Y | ||
| status_xwayland = | | status_xwayland = Y | ||
| status_fde = | | status_fde = Y | ||
| status_mainline = <!-- Instead of a Linux kernel fork, it is possible to run mainline. --> | | status_mainline = <!-- Instead of a Linux kernel fork, it is possible to run mainline. --> | ||
| status_battery = <!-- Charging the battery with charging-sdl is possible --> | | status_battery = <!-- Charging the battery with charging-sdl is possible --> | ||
Line 38: | Line 41: | ||
<!-- you can also use these lines if you need to: | <!-- you can also use these lines if you need to: | ||
Version of the kernel that pmos is running | Version of the kernel that pmos is running | ||
| pmoskernel = 3.x.x | | pmoskernel = 3.x.x | ||
Line 47: | Line 48: | ||
| status_otg = - | | status_otg = - | ||
--> | --> | ||
}} | }}{{Based on SoC|Nvidia_Tegra_3_(tegra30)|Tegra 3}} | ||
== | == How to enter flash mode == | ||
To start fastboot mode: | |||
When tablet is running Android (with usb debugging enabled in the developer options) or recovery run | |||
adb reboot bootloader | |||
To unlock bootloader in fastboot mode (CAUTION: this will erase userdata! Backup before doing this!): | |||
fastboot oem unlock | |||
To | To boot into recovery: hold volume down and power on at the same time to start device. | ||
== Installation == | == Installation == | ||
Line 87: | Line 79: | ||
<!-- add more sections below as necessary, e.g. WiFi, photos, ... --> | <!-- add more sections below as necessary, e.g. WiFi, photos, ... --> | ||
== | == How bonsaiblue made wifi work == | ||
How bonsaiblue made wifi work (minus the confusing detours). [[Samsung_Galaxy_S_Advance_(samsung-i9070)#How_drebrez_made_wifi_work|Inspired by the very helpful How_drebrez_made_wifi_work]]. | |||
* Find information online about the wifi chip of the device: it uses Broadcom BCM4330 for wifi 11b/g/n and Bluetooth 3.0 | |||
* Read the [[WiFi]] page, in particular [[WiFi#Broadcom_WiFi|the part about Broadcom WiFi]]. | |||
* Since that page mentions kernel config parameters, grep for "BCM" in the devices kernel config: | |||
grep -i "BCM" pmaports/device/linux-medion-kai/config-medion-kai.armv7 | |||
... | |||
grep -i " | |||
CONFIG_BCMDHD_FXN_FW_PATH="/system/vendor/firmware/bcm4330/fw_bcmdhd.bin" | CONFIG_BCMDHD_FXN_FW_PATH="/system/vendor/firmware/bcm4330/fw_bcmdhd.bin" | ||
CONFIG_BCMDHD_FXN_NVRAM_PATH="/system/etc/nvram_4330.txt" | CONFIG_BCMDHD_FXN_NVRAM_PATH="/system/etc/nvram_4330.txt" | ||
CONFIG_BCMDHD_FXN_195_89=m | CONFIG_BCMDHD_FXN_195_89=m | ||
... | |||
* So the wifi chip needs a kernel module (<code>CONFIG_BCMDHD_FXN_195_89=m</code>) and firmware and config files (<code>fw_bcmdhd.bin</code>, <code>nvram_4330.txt</code>). | |||
* Download and unpack the vendor's OTA ROM zip (link in the [[Medion_Lifetab_S9714_(medion-kai)#See_also]] section). (Other ideas on how to find firmware files are on the [[How_to_find_device-specific_information#Firmware_files]] page.) | |||
* In the unpacked ROM folder, look for <code>system/vendor/firmware/bcm4330/fw_bcmdhd.bin</code> and <code>system/etc/nvram_4330.txt</code>. | |||
* First step is to try to get wifi to work with the vendor firmware. Later on we might be able to use existing postmarket firmware packages instead. | |||
* Copy <code>nvram_4330.txt</code> to <code>aports/device/device-medion-kai</code>. | |||
* Edit <code>device/linux-medion-kai/APKBUILD</code> to get kernel modules built and installed: | |||
** Increase <code>pkgrel</code> by one. | |||
** At the end of the <code>build()</code> section, add this to build the modules: | |||
# the 'no-pic' flag is necessary to avoid the | |||
# error 'Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)' when loading the module | |||
make ARCH="$_carch" CC="${CC:-gcc}" CFLAGS_MODULE="-fno-pic" \ | |||
KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS" modules | |||
** At the end of the <code>package()</code> section, add this to install the modules: | |||
# Modules | |||
cd "$builddir" | |||
unset LDFLAGS | |||
make ARCH="$_carch" CC="${CC:-gcc}" \ | |||
KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS" \ | |||
INSTALL_MOD_PATH="$pkgdir" INSTALL_MOD_STRIP=1 \ | |||
modules_install | |||
* Edit <code>device/linux-medion-kai/config-medion-kai.armv7</code> and set the path where the wifi firmware is expected to a subfolder of <code>/lib/firmware/postmarketos</code>: | |||
CONFIG_BCMDHD_FXN_FW_PATH="/lib/firmware/postmarketos/bcmdhd/bcm4330/fw_bcm4330_bg.bin" | |||
CONFIG_BCMDHD_FXN_NVRAM_PATH="/lib/firmware/postmarketos/bcmdhd/bcm4330/nvram_4330.txt" | |||
* Rebuild <code>linux-medion-kai</code> and create an image file: | |||
pmbootstrap checksum linux-medion-kai && \ | |||
pmbootstrap kconfig check -f && \ | |||
pmbootstrap build linux-medion-kai --force && \ | |||
pmbootstrap install | |||
* Chroot into the image file and check if modules have been built: | |||
pmbootstrap chroot -r | |||
ip: | find /lib/modules/ | ||
* In particular there should be <code>/lib/modules/3.1.10/kernel/drivers/net/wireless/bcmdhd_fxn_195_89/bcmdhd.ko</code>. Leave chroot again (with <code>exit</code>). | |||
* In <code>device/device-medion-kai</code>, add a new file <code>modules-load.conf</code> and have the module found in the previous step loaded at boot time: | |||
# This file contains the names of kernel modules that should be loaded | |||
# at boot time, one per line. Lines beginning with "#" are ignored. | |||
# wifi module | |||
bcmdhd | |||
* Edit <code>device/device-medion-kai/APKBUILD</code> | |||
** Increase <code>pkgrel</code> by one. | |||
** Add to source files and declare a new subpackage: | |||
subpackages="$pkgname-nonfree-firmware:nonfree_firmware" | |||
source="deviceinfo | |||
nvram_4330.txt | |||
modules-load.conf" | |||
** At the end of the <code>package()</code> section, add this to put <code>modules-load.conf</code> in the right place on the device: | |||
install -Dm644 "$srcdir"/modules-load.conf \ | |||
"$pkgdir"/etc/modules-load.d/00-$pkgname.conf | |||
** Below the <code>package()</code> section, add a new <code>nonfree_firmware()</code> section that installs the <code>nvram_4330.txt</code> file from the vendor ROM. | |||
nonfree_firmware() { | |||
pkgdesc="Wifi firmware" | |||
mkdir "$subpkgdir" | |||
install -D -m644 "$srcdir"/nvram_4330.txt \ | |||
"$subpkgdir"/lib/firmware/postmarketos/bcmdhd/bcm4330/nvram_4330.txt | |||
} | |||
* Rebuild <code>device-medion-kai</code> and recreate the image file: | |||
pmbootstrap checksum device-medion-kai && \ | |||
pmbootstrap build device-medion-kai --force && \ | |||
pmbootstrap install | |||
* Flash image to device | |||
pmbootstrap flasher flash_rootfs && pmbootstrap flasher flash_kernel | |||
* ssh into the device via [[USB_Network]] | |||
* Use scp to copy the firmware bin <code>fw_bcmdhd.bin</code> onto the device (e.g. into the /tmp directory) and move it to the path given in <code>CONFIG_BCMDHD_FXN_FW_PATH</code>: <code>/lib/firmware/postmarketos/bcmdhd/bcm4330/fw_bcm4330_bg.bin</code>, next to <code>nvram_4330.txt</code>, which should already be in that directory. | |||
* Restart the device | |||
* Log in with ssh over USB again and run lsmod to see if the kernel module has been loaded correctly: | |||
lsmod | |||
Module Size Used by | |||
bcmdhd 387306 0 | |||
cfg80211 157302 1 bcmdhd | |||
* If the module isn't listed, check that it's on the device (<code>find /lib/modules/ -iname "*bcm*ko"</code>) and what happens if you try to insert it manually (<code>modprobe bcmdhd || dmesg | tail -n 20</code>). If modprobe doesn't find the module you can also try <code>insmod /lib/modules/3.1.10/kernel/drivers/net/wireless/bcmdhd_fxn_195_89/bcmdhd.ko || dmesg | tail -n 20</code>.<br/>If dmesg gives <code>Unknown symbol _GLOBAL_OFFSET_TABLE_</code> you may be missing the <code>-fno-pic</code> flag when building the kernel modules. | |||
* Once the module is loaded correctly, continue with the [[WiFi#Debugging|steps on the Wifi page]]: | |||
** Check if the interface is available | |||
ip link | |||
... | |||
7: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 | |||
link/ether 00:11:22:33:44:55 brd ff:ff:ff:ff:ff:ff | |||
** Turn on wifi | |||
nmcli radio wifi on | |||
** Scan for available wifis: | |||
nmcli device wifi list ifname wlan0 | |||
** Connect to your wifi: | |||
nmcli device wifi connect "$SSID" password "$PASSWORD" ifname wlan0 | |||
* If wifi works, try replacing the vendor's firmware bin with bins from existing postmarket firmware packages. Information about the Broadcom firmware version is added in ASCII at the end of the blobs and can be seen with <code>less</code>: | |||
less fw_bcmdhd.bin | |||
... 4330b2-roml/sdio-g-pool-pno-pktfilter-keepalive-wapi-wme-p2p-apsta-aoe Version: 5.90.195.89 CRC: 2303bcd6 Date: Sun 2012-07-22 19:27:22 PDT ... | |||
* Candidate postmarket packages can be identified with <code>grep -ril "bcm" pmaports/firmware</code>. Package <code>firmware-aosp-broadcom-wlan</code> sounds promising. | |||
* The blobs for <code>firmware-aosp-broadcom-wlan</code> are taken from this [https://github.com/zhuowei/android_hardware_broadcom_wlan/tree/6c8ef5b600cec5d36a54a0276fe8c97b9ab8d6bb/bcmdhd/firmware GitHub repository]. | |||
* Checking blob <code>bcm4330/fw_bcm4330_bg.bin</code> from that repository with less shows that it's a newer version: | |||
less fw_bcm4330_bg.bin | |||
... 4330b2-roml/sdio-g-p2p-idsup-idauth-pno Version: 5.90.195.114 CRC: 24b8f965 Date: Wed 2013-01-23 17:48:37 PST ... | |||
* Copying <code>fw_bcm4330_bg.bin</code> onto the device at <code>/lib/firmware/postmarketos/bcmdhd/bcm4330/fw_bcm4330_bg.bin</code> and rebooting shows, that this firmware also works (with the vendor <code>nvram_4330.txt</code> file unchanged). | |||
* This means we can add <code>firmware-aosp-broadcom-wlan</code> as a dependency in the firmware part of <code>device/device-medion-kai/APKBUILD</code>: | |||
nonfree_firmware() { | |||
pkgdesc="Wifi firmware" | |||
depends="firmware-aosp-broadcom-wlan" | |||
mkdir "$subpkgdir" | |||
install -D -m644 "$srcdir"/nvram_4330.txt \ | |||
"$subpkgdir"/lib/firmware/postmarketos/bcmdhd/bcm4330/nvram_4330.txt | |||
} | |||
Result: [https://gitlab.postmarketos.org/postmarketOS/pmaports/merge_requests/904 Merge request for wifi on medion kai] | |||
== Contributors == | |||
* [[User:Bonsaiblue|Bonsaiblue]] | |||
== Maintainer(s) == | |||
<!-- Only if this device doesn't run on linux-postmarketos yet! --> | |||
<!-- This person needs to be willing to answer questions from users of this device --> | |||
== Users owning this device == | |||
{{Device owners}} | |||
Related links | === Related links === | ||
* [https://www.cypress.com/file/298686/download nvram text file reference] | |||
* [https:// | * [https://android.googlesource.com/platform/hardware/broadcom/wlan/+/bcd905af9e0c40e7c4bf2e6390fc3374a7a261f7/bcmdhd/firmware/bcm4330/ more recent version of broadcom firmware that also works on kai] | ||
* [https://android.googlesource.com/ | |||
== See also == | == See also == | ||
* [ | * [[Google Nexus 7 2012 (asus-grouper)]] | ||
* | * {{Device package|medion-kai}} | ||
* {{Kernel package|medion-kai}} | |||
* [https://github.com/red-black-bonsai/android_kernel_medion_lifetab_s9714 Vendor Android kernel sources in a GitHub repository] | * [https://github.com/red-black-bonsai/android_kernel_medion_lifetab_s9714 Vendor Android kernel sources in a GitHub repository] | ||
* [https://forums.lenovo.com/t5/Lenovo-Android-based-Tablets-and/A2109-Updated-ClockworkMod-Recovery-for-Jelly-Bean/td-p/949575 CWM recovery is available here] | * [https://forums.lenovo.com/t5/Lenovo-Android-based-Tablets-and/A2109-Updated-ClockworkMod-Recovery-for-Jelly-Bean/td-p/949575 CWM recovery is available here] | ||
* [https://docs.google.com/open?id=0B1jde5rC0oQGOVRfVzNrY19SZWc Direct link for CWM for Jelly Bean / Android 4.1] | * [https://docs.google.com/open?id=0B1jde5rC0oQGOVRfVzNrY19SZWc Direct link for CWM for Jelly Bean / Android 4.1] | ||
* [https://docs.google.com/open?id=0B1jde5rC0oQGWmJsYi1tLWViUWc Direct link for CWM for Ice Cream Sandwich / Android 4.0] | * [https://docs.google.com/open?id=0B1jde5rC0oQGWmJsYi1tLWViUWc Direct link for CWM for Ice Cream Sandwich / Android 4.0] | ||
* [https://download.chainfire.eu/696/SuperSU/UPDATE-SuperSU-v2.46.zip SuperSU-v2.46] | |||
* [https://github.com/Kahlo007/cm_kernel_lenovo_kai kernel sources for Lenovo Kai?] | |||
<!-- | <!-- |
Latest revision as of 13:49, 4 November 2024
![]() Lifetab S9714 | |
Manufacturer | Medion |
---|---|
Name | Lifetab S9714 |
Codename | medion-kai |
Released | 2012 |
Type | tablet |
Hardware | |
Chipset | Nvidia Tegra 3 (T30L) |
CPU | Quad-Core 1.2 GHz |
GPU | Ultra Low Power GeForce |
Display | 1280 x 800 touchscreen |
Storage | 32 GB internal storage |
Memory | 1 GB |
Architecture | armv7 |
Software | |
Original software | Android |
Original version | 4.0 |
Extended version | 4.1 |
postmarketOS | |
Category | testing |
Pre-built images | no |
Flashing |
Works |
---|---|
USB Networking |
Works |
Internal storage |
No data |
SD card |
No data |
Battery |
No data |
Screen |
Works |
Touchscreen |
Works |
Multimedia | |
3D Acceleration |
No data |
Audio |
No data |
Camera |
No data |
Camera Flash |
No data |
Connectivity | |
WiFi |
Works |
Bluetooth |
No data |
GPS |
No data |
NFC |
No data |
Modem | |
Calls |
No data |
SMS |
No data |
Mobile data |
No data |
Miscellaneous | |
FDE |
Works |
USB OTG |
No data |
HDMI/DP |
No data |
Sensors | |
Accelerometer |
No data |
Magnetometer |
No data |
Ambient Light |
No data |
Proximity |
No data |
Hall Effect |
No data |
Haptics |
No data |
Barometer |
No data |
This device is based on the Tegra 3. See the SoC page for common tips, guides and troubleshooting steps |
How to enter flash mode
To start fastboot mode: When tablet is running Android (with usb debugging enabled in the developer options) or recovery run
adb reboot bootloader
To unlock bootloader in fastboot mode (CAUTION: this will erase userdata! Backup before doing this!):
fastboot oem unlock
To boot into recovery: hold volume down and power on at the same time to start device.
Installation
My procedure was:
- Backup all important user data
- Unlock bootloader (see above)
- Install CWM recovery by going into fastboot mode and then running
fastboot flash recovery A2109_CWMrecovery-6.0.1.9d.img
- Backup Android installation on SD card
- Follow installation guide (note that flashing rootfs can take a few minutes without feedback, just wait)
- After flashing has finished, the screen should show the Medion logo and a notice saying "Cold booting linux"; after that, the postmarkedOS logo and then the demo should come up.
Notes
Apparently, the device was manufactured by Lenovo for vendor Medion and is similar to Lenovo's A2110 / A2109 boards. Some information about the IdeaTab A2109.
How bonsaiblue made wifi work
How bonsaiblue made wifi work (minus the confusing detours). Inspired by the very helpful How_drebrez_made_wifi_work.
- Find information online about the wifi chip of the device: it uses Broadcom BCM4330 for wifi 11b/g/n and Bluetooth 3.0
- Read the WiFi page, in particular the part about Broadcom WiFi.
- Since that page mentions kernel config parameters, grep for "BCM" in the devices kernel config:
grep -i "BCM" pmaports/device/linux-medion-kai/config-medion-kai.armv7 ... CONFIG_BCMDHD_FXN_FW_PATH="/system/vendor/firmware/bcm4330/fw_bcmdhd.bin" CONFIG_BCMDHD_FXN_NVRAM_PATH="/system/etc/nvram_4330.txt" CONFIG_BCMDHD_FXN_195_89=m ...
- So the wifi chip needs a kernel module (
CONFIG_BCMDHD_FXN_195_89=m
) and firmware and config files (fw_bcmdhd.bin
,nvram_4330.txt
). - Download and unpack the vendor's OTA ROM zip (link in the Medion_Lifetab_S9714_(medion-kai)#See_also section). (Other ideas on how to find firmware files are on the How_to_find_device-specific_information#Firmware_files page.)
- In the unpacked ROM folder, look for
system/vendor/firmware/bcm4330/fw_bcmdhd.bin
andsystem/etc/nvram_4330.txt
. - First step is to try to get wifi to work with the vendor firmware. Later on we might be able to use existing postmarket firmware packages instead.
- Copy
nvram_4330.txt
toaports/device/device-medion-kai
. - Edit
device/linux-medion-kai/APKBUILD
to get kernel modules built and installed:- Increase
pkgrel
by one. - At the end of the
build()
section, add this to build the modules:
- Increase
# the 'no-pic' flag is necessary to avoid the # error 'Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)' when loading the module make ARCH="$_carch" CC="${CC:-gcc}" CFLAGS_MODULE="-fno-pic" \ KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS" modules
- At the end of the
package()
section, add this to install the modules:
- At the end of the
# Modules cd "$builddir" unset LDFLAGS make ARCH="$_carch" CC="${CC:-gcc}" \ KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS" \ INSTALL_MOD_PATH="$pkgdir" INSTALL_MOD_STRIP=1 \ modules_install
- Edit
device/linux-medion-kai/config-medion-kai.armv7
and set the path where the wifi firmware is expected to a subfolder of/lib/firmware/postmarketos
:
CONFIG_BCMDHD_FXN_FW_PATH="/lib/firmware/postmarketos/bcmdhd/bcm4330/fw_bcm4330_bg.bin" CONFIG_BCMDHD_FXN_NVRAM_PATH="/lib/firmware/postmarketos/bcmdhd/bcm4330/nvram_4330.txt"
- Rebuild
linux-medion-kai
and create an image file:
pmbootstrap checksum linux-medion-kai && \ pmbootstrap kconfig check -f && \ pmbootstrap build linux-medion-kai --force && \ pmbootstrap install
- Chroot into the image file and check if modules have been built:
pmbootstrap chroot -r find /lib/modules/
- In particular there should be
/lib/modules/3.1.10/kernel/drivers/net/wireless/bcmdhd_fxn_195_89/bcmdhd.ko
. Leave chroot again (withexit
).
- In
device/device-medion-kai
, add a new filemodules-load.conf
and have the module found in the previous step loaded at boot time:
# This file contains the names of kernel modules that should be loaded # at boot time, one per line. Lines beginning with "#" are ignored. # wifi module bcmdhd
- Edit
device/device-medion-kai/APKBUILD
- Increase
pkgrel
by one. - Add to source files and declare a new subpackage:
- Increase
subpackages="$pkgname-nonfree-firmware:nonfree_firmware" source="deviceinfo nvram_4330.txt modules-load.conf"
- At the end of the
package()
section, add this to putmodules-load.conf
in the right place on the device:
- At the end of the
install -Dm644 "$srcdir"/modules-load.conf \ "$pkgdir"/etc/modules-load.d/00-$pkgname.conf
- Below the
package()
section, add a newnonfree_firmware()
section that installs thenvram_4330.txt
file from the vendor ROM.
- Below the
nonfree_firmware() { pkgdesc="Wifi firmware" mkdir "$subpkgdir" install -D -m644 "$srcdir"/nvram_4330.txt \ "$subpkgdir"/lib/firmware/postmarketos/bcmdhd/bcm4330/nvram_4330.txt }
- Rebuild
device-medion-kai
and recreate the image file:
pmbootstrap checksum device-medion-kai && \ pmbootstrap build device-medion-kai --force && \ pmbootstrap install
- Flash image to device
pmbootstrap flasher flash_rootfs && pmbootstrap flasher flash_kernel
- ssh into the device via USB_Network
- Use scp to copy the firmware bin
fw_bcmdhd.bin
onto the device (e.g. into the /tmp directory) and move it to the path given inCONFIG_BCMDHD_FXN_FW_PATH
:/lib/firmware/postmarketos/bcmdhd/bcm4330/fw_bcm4330_bg.bin
, next tonvram_4330.txt
, which should already be in that directory. - Restart the device
- Log in with ssh over USB again and run lsmod to see if the kernel module has been loaded correctly:
lsmod Module Size Used by bcmdhd 387306 0 cfg80211 157302 1 bcmdhd
- If the module isn't listed, check that it's on the device (
find /lib/modules/ -iname "*bcm*ko"
) and what happens if you try to insert it manually (modprobe bcmdhd || dmesg | tail -n 20
). If modprobe doesn't find the module you can also tryinsmod /lib/modules/3.1.10/kernel/drivers/net/wireless/bcmdhd_fxn_195_89/bcmdhd.ko || dmesg | tail -n 20
.
If dmesg givesUnknown symbol _GLOBAL_OFFSET_TABLE_
you may be missing the-fno-pic
flag when building the kernel modules.
- Once the module is loaded correctly, continue with the steps on the Wifi page:
- Check if the interface is available
ip link ... 7: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:11:22:33:44:55 brd ff:ff:ff:ff:ff:ff
- Turn on wifi
nmcli radio wifi on
- Scan for available wifis:
nmcli device wifi list ifname wlan0
- Connect to your wifi:
nmcli device wifi connect "$SSID" password "$PASSWORD" ifname wlan0
- If wifi works, try replacing the vendor's firmware bin with bins from existing postmarket firmware packages. Information about the Broadcom firmware version is added in ASCII at the end of the blobs and can be seen with
less
:
less fw_bcmdhd.bin ... 4330b2-roml/sdio-g-pool-pno-pktfilter-keepalive-wapi-wme-p2p-apsta-aoe Version: 5.90.195.89 CRC: 2303bcd6 Date: Sun 2012-07-22 19:27:22 PDT ...
- Candidate postmarket packages can be identified with
grep -ril "bcm" pmaports/firmware
. Packagefirmware-aosp-broadcom-wlan
sounds promising.
- The blobs for
firmware-aosp-broadcom-wlan
are taken from this GitHub repository. - Checking blob
bcm4330/fw_bcm4330_bg.bin
from that repository with less shows that it's a newer version:
less fw_bcm4330_bg.bin ... 4330b2-roml/sdio-g-p2p-idsup-idauth-pno Version: 5.90.195.114 CRC: 24b8f965 Date: Wed 2013-01-23 17:48:37 PST ...
- Copying
fw_bcm4330_bg.bin
onto the device at/lib/firmware/postmarketos/bcmdhd/bcm4330/fw_bcm4330_bg.bin
and rebooting shows, that this firmware also works (with the vendornvram_4330.txt
file unchanged).
- This means we can add
firmware-aosp-broadcom-wlan
as a dependency in the firmware part ofdevice/device-medion-kai/APKBUILD
:
nonfree_firmware() { pkgdesc="Wifi firmware" depends="firmware-aosp-broadcom-wlan" mkdir "$subpkgdir" install -D -m644 "$srcdir"/nvram_4330.txt \ "$subpkgdir"/lib/firmware/postmarketos/bcmdhd/bcm4330/nvram_4330.txt }
Result: Merge request for wifi on medion kai
Contributors
Maintainer(s)
Users owning this device
Related links
See also
- Google Nexus 7 2012 (asus-grouper)
- Device package
- Kernel package
- Vendor Android kernel sources in a GitHub repository
- CWM recovery is available here
- Direct link for CWM for Jelly Bean / Android 4.1
- Direct link for CWM for Ice Cream Sandwich / Android 4.0
- SuperSU-v2.46
- kernel sources for Lenovo Kai?