Microsoft Lumia 640 (microsoft-dempsey)
Appearance
This device has been tested with postmarketOS, but its device package has not yet been added to the postmarketOS repositories.
This means that it cannot be selected in pmbootstrap.
This means that it cannot be selected in pmbootstrap.
![]() Dempsey running sxmo on postmarketOS | |
Manufacturer | Microsoft |
---|---|
Name | Lumia 640 |
Codename | microsoft-dempsey |
Released | 2015 |
Hardware | |
Chipset | Qualcomm Snapdragon 400 (MSM8926) |
CPU | Quad-core 1.2 GHz Cortex-A7 |
GPU | Adreno 305 |
Display | 720 x 1280 IPS LCD |
Storage | 8 GB |
Memory | 1 GB |
Architecture | armv7 |
Software | |
Original software | Windows Phone |
Original version | 8.1 |
postmarketOS | |
Category | testing |
Pre-built images | no |
Mainline | yes |
Flashing |
No data |
---|---|
USB Networking |
No data |
Internal storage |
No data |
SD card |
No data |
Battery |
Broken |
Screen |
Works |
Touchscreen |
Works |
Multimedia | |
3D Acceleration |
Broken |
Audio |
Broken |
Camera |
Broken |
Camera Flash |
No data |
Connectivity | |
WiFi |
Broken |
Bluetooth |
Broken |
GPS |
Broken |
NFC |
Works |
Modem | |
Calls |
Broken |
SMS |
Broken |
Mobile data |
Broken |
Miscellaneous | |
FDE |
Broken |
USB OTG |
No data |
HDMI/DP |
No data |
Sensors | |
Accelerometer |
Works |
Magnetometer |
No data |
Ambient Light |
No data |
Proximity |
No data |
Hall Effect |
No data |
Haptics |
No data |
Barometer |
No data |
This device is a Windows Phone. See the Windows Mobile page for common tips, guides and troubleshooting steps |
This device is a Windows Phone. See the Windows Phone page for common tips, guides and troubleshooting steps |
Contributors
Users owning this device
- Brad1111 (Notes: RM-1072)
- Chaosleo07 (Notes: running mainline)
- Dominduchami (Notes: Runs mainline)
- Ermine (Notes: RM-1075, runs mainline)
- FieryFlames
- Kierownik223 (Notes: LTE model)
- Marshift
- Maxnet (Notes: rm-1077, unlocked bootloader)
- Nobodywasishere (Notes: Actually the AT&T LTE model but close enough)
- PEPSIMANTR (Notes: Single SIM LTE variant(RM-1074))
- Rom4nik (Notes: RM-1077)
- Shipa (Notes: 2pcs, fon 1709 ATM)
- Wdxvvy (Notes: running W10M 1709)
Current porting status
- Mainline boots and has touch, screen, and side keys working.
- All 4 cores are now up!
- NFC available!
- USB is currently being tested, I can't personally confirm if USB networking is working but someone with a Lumia 735 said it is for them.
- Proximity is working on tesla, just needs testing on dempsey
- WLAN & BT being looked at
Guides (Should work in theory for the other Lumia's specified in the EDK2 port as well.)
Here's a nice guide written by WolfLink115 which explains how to compile/install EDK2 and boot Linux:
- Compiling EDK2
- Installing EDK2
- Booting Linux from eMMC
- unbrick guide If you manage to brick the Lumia 640 (the RM-1073 version, not tested on others!!) into Qualcomm EDL mode, then this guide can help you unbrick it.
See also
Internal links
External links
- [1] Close to mainline linux kernel w/ support for dempsey and a few other msm8x26 lumias on msm8x26 branch. Use msm8x26-touchscreen branch for touchscreen, until it gets committed into msm8x26.
- [2] EDK2 for dempsey, tesla, makepeace and superman. This does boot Linux!
- [3] LittleKernel for tesla and some other lumias. This does not boot Linux!! Useful for chain loading lk2nd to dump regulators when porting a lumia to linux.
- [4] Boot shim used to boot EDK2.