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title: Dell Precision T1650
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x-toc-enable: true
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...
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**[PLEASE READ THESE INSTRUCTIONS BEFORE INSTALLING](../../news/safety.md),
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OR YOU MIGHT BRICK YOUR MACHINE: [SAFETY PRECAUTIONS](../../news/safety.md)**
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<div class="specs">
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<center>
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<img tabindex=1 alt="Dell Precision T1650" class="p" src="https://av.libreboot.org/t1650/t1650.jpg" /><span class="f"><img src="https://av.libreboot.org/t1650/t1650.jpg" /></span>
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</center>
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| ***Specifications*** | |
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|----------------------------|------------------------------------------------|
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| **Manufacturer** | Dell |
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| **Name** | Precision T1650 |
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| **Variants** | Precision T1650 |
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| **Released** | 2012 |
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| **Chipset** | Intel QM77 |
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| **CPU** | Intel Ivy Bridge |
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| **Graphics** | Discrete graphics, or Intel HD Graphics model
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depending on CPU model |
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| **Memory** | DDR3 DIMMs (max 32GB, 2x16GB), ECC memory supported |
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| **Architecture** | x86_64 |
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| **Original boot firmware** | HP UEFI firmware |
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| **Intel ME/AMD PSP** | Present. Can be disabled with me_cleaner. |
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| **Flash chip** | SOIC-16 16MiB (128Mbit) |
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```
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W+: Works without blobs;
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N: Doesn't work;
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W*: Works with blobs;
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U: Untested;
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P+: Partially works;
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P*: Partially works with blobs
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?: UNKNOWN AT THIS TIME
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```
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| ***Features*** | |
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|---------------------------------------------------|----|
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| **Internal flashing with original boot firmware** | ? |
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| **Display (if Intel GPU)** | W+ |
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| **Display (discrete CPU, SeaBIOS payload only)** | W* |
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| **Audio** | W+ |
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| **RAM Init** | W+ |
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| ***Payloads supported*** | |
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|----------------------------|-----------|
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| **GRUB (libgfxinit only)** | Works |
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| **SeaBIOS** | Works |
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| **SeaBIOS with GRUB** | Works |
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</div>
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Introduction
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============
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**Unavailable in Libreboot 20230625 or earlier. You must [compile from
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source](../build/), or use the next release after Libreboot 20230625.**
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Official information about the laptop can be found here:
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<https://i.dell.com/sites/csdocuments/Shared-Content_data-Sheets_Documents/en/uk/Dell_Precision_T1650_Spec_Sheet.pdf>
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This is similar code-wise to [Dell
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OptiPlex 9010](https://doc.coreboot.org/mainboard/dell/optiplex_9010.html)
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which coreboot supports.
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Build ROM image from source
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---------------------------
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The build target, when building from source, is thus:
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./build boot roms t1650_12mb
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Installation
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============
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Insert binary files
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-------------------
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If you're using a release ROM, please ensure that you've inserted extra firmware
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required refer to the [guide](../install/ivy_has_common.md) for that. (failure
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to adhere to this advice will result in a bricked machine)
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Libreboot's build system automatically downloads and processes these files if
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you build Libreboot from source, but the same logic that it uses must be re-run
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if you're using a release image.
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Set MAC address
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---------------
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This platform uses an Intel Flash Descriptor, and defines an Intel GbE NVM
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region. As such, release/build ROMs will contain the same MAC address. To
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change the MAC address, please read [nvmutil documentation](../install/nvmutil.md).
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WARNING about GPU compatibility
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-------------------------------
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At the time of testing this board, I didn't have a CPU with graphics built in,
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so I could only use discrete graphics on the PCI-E slot (in my case, Nvidia
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Quadro K420 running under the nouveau driver in Linux).
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If you want to use onboard graphics, you must have a CPU that has a GPU built
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into it. You can find a list here:
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<https://en.wikipedia.org/wiki/Ivy_Bridge_(microarchitecture)>
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Because of this, Libreboot currently only provides ROM images where SeaBIOS
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is the first payload, and SeaBIOS is relied upon the execute the VGA ROM that's
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stored on the graphics card. However, coreboot's libgfxinit is also enabled,
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so onboard graphics *should* work if you don't have a graphics card installed.
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Coreboot has libre initialisation code for Intel graphics, but libre
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initialisation code is not available for most graphics cards. This machine can
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take any graphics card that fits in the PCI-E slot.
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GRUB *also* works, from SeaBIOS when the machine is booted in text mode. Both
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coreboot GRUB, and BIOS GRUB provided by your (Linux) distro. It's done this
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way (SeaBIOS first) because Libreboot's configuration does not tell *coreboot*
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to execute VGA Option ROMs, and it's important that we try to prevent bricks
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whenever possible.
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Flash a ROM image (software)
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-----------------
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If you're already running Libreboot, and you don't have flash protection
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turned on, [internal flashing](../install/) is possible.
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Flash a ROM image (hardware)
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-----------------
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**REMOVE all power sources and connectors from the machine, before doing this.
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This is to prevent short circuiting and power surges while flashing.**
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For general information, please refer to [25xx NOR flash
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instructions](../install/spi.md) - that page refers to use of socketed flash.
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This machine is somewhat cumbersome to flash, because it has a SOIC-8 flash
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for the first 8MB part, and 4MB SOIC8. You can split up your 12MB ROM image
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like so:
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dd if=libreboot.rom of=4mb.rom bs=1M skip=8
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dd if=libreboot.rom of=8mb.rom bs=1M count=8
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You *could* laboriously switch clips, but I flash lots of machines all the
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time so I did *this* (don't try this at home - I wasn't at home when I tried
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it):
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I just use one and insulate the other one that I'm not using. If the wires are
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short enough, induction won't be a problem, but these are highspeed signals. You
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have to keep the wires short! (but not shorted)
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The side cover comes off easily, and you can find the flash ICs next to the RAM.
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Here's the SOIC8 IC being flashed:
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and here is the SOIC16 IC being flashed:
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Here is SeaBIOS after a successful boot attempt:
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Here is GRUB:
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MemTest86+:
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The Debian installer:
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and here is Mozilla Firefox in Debian booted on T1650, showing the Libreboot
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flashing instructions [in Chinese](../install/spi.zh-cn.md):
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Other aspects of the machine are not much to write home about. It's a standard
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desktop PC form factor, and you can just run whatever you want on it.
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Enjoy!
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Leah Rowe