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Microsoft Lumia 640 (microsoft-dempsey)

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Revision as of 17:41, 8 November 2021 by FieryFlames (talk | contribs) (update image and progress)
Microsoft Lumia 640 Dual SIM
Dempsey running sxmo on postmarketOS
Dempsey running sxmo on postmarketOS
Manufacturer Microsoft
Name Lumia 640 Dual SIM
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
Features
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
No data
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

Contributors

Users owning this device


Current porting status

  • Mainline boots and has touch, screen, and side keys working.
  • All 4 cores are now up!
  • 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.