Microsoft Lumia 640 (microsoft-dempsey)
Appearance
![]() Dempsey running sxmo on postmarketOS | |
Manufacturer | Microsoft |
---|---|
Name | Lumia 640 |
Codename | microsoft-dempsey |
Released | 2015 |
Hardware | |
Chipset | Qualcomm MSM8926 Snapdragon 400 |
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 | Microsoft Windows Phone 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 |
No data |
Screen |
Works |
Touchscreen |
Partial |
Multimedia | |
3D Acceleration |
Broken |
Audio |
No data |
Camera |
No data |
Camera Flash |
No data |
Connectivity | |
WiFi |
No data |
Bluetooth |
No data |
GPS |
No data |
NFC |
Works |
Modem | |
Calls |
No data |
SMS |
No data |
Mobile data |
No data |
Miscellaneous | |
FDE |
No data |
USB OTG |
No data |
HDMI/DP |
No data |
Sensors | |
Accelerometer |
Broken |
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 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)
- 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:
- [1] Compiling EDK2
- [2] Installing EDK2
- [3] Booting Linux from eMMC
- [4] 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
- [5] 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.
- [6] EDK2 for dempsey, tesla, makepeace and superman. This does boot Linux!
- [7] 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.
- [8] Boot shim used to boot EDK2.