OS2 World Community Forum

OS/2, eCS & ArcaOS - Technical => Hardware => Topic started by: Neil Waldhauer on January 03, 2026, 02:26:25 am

Title: Video memory cannot be assigned to 32-bit address!
Post by: Neil Waldhauer on January 03, 2026, 02:26:25 am
I have a Lenovo Thinkpad X13 gen 2, and while I didn't get it to run ArcaOS, I was curious if it could be done.

It can't. (see attachment) Actually, it can. See correction below.

Title: Re: Video memory cannot be assigned to 32-bit address!
Post by: Mo on January 03, 2026, 01:35:05 pm
Hello and happy new Year!

it works for me with a x13 G4 (AMD Ryzen 7 Pro 7840U with Radeon 780M). 1.4 Gb Ram is accessible. Unfortunately I dont get any USB Ethernet Adapter running (Moschip, ASIX). Both worked on previos ArcaOS installations on a different Computer. They are recognized but dont get an IP assigned, Static IP works but doesn't get connection to the router.

 
Title: Re: Video memory cannot be assigned to 32-bit address!
Post by: David McKenna on January 03, 2026, 03:40:30 pm
Mo,

  The NIC driver needs to be located after certain other drivers in the CONFIG.SYS file, and gives that exact symptom if it is not. Run 'testlog generic' from a command line and in the file created scroll down to the 'Config.sys' section and see if it lists any errors.

Regards,
Title: Re: Video memory cannot be assigned to 32-bit address!
Post by: Neil Waldhauer on January 04, 2026, 04:55:35 am
I need to correct my previous post. I changed the BIOS setting for video RAM from 512 MB to 256 MB, and ArcaOS can now run on the computer. The latest MultiMac32-E1000B driver supports the Ethernet port.

A Lenovo adapter is required to connect an Ethernet cable because the laptop is too thin to support a normal Ethernet connection.
Title: Re: Video memory cannot be assigned to 32-bit address!
Post by: Dave Yeo on January 04, 2026, 05:21:48 am
That's good as I"m sure I did hear of some where the frame buffer couldn't be put in low memory.
How much ram is accessible? mem /v
Title: Re: Video memory cannot be assigned to 32-bit address!
Post by: Martin Iturbide on January 04, 2026, 03:19:25 pm
Hi Neil.

A Lenovo adapter is required to connect an Ethernet cable because the laptop is too thin to support a normal Ethernet connection.

Is that the "ThinkPad Ethernet Extension Adapter Gen 2 (https://www.lenovo.com/us/en/p/accessories-and-software/cables-and-adapters/cables-and-adapters_adapters/4x90q84427)" ? I use one o this on the Thinkpad T14s ethernet.

Regards
Title: Re: Video memory cannot be assigned to 32-bit address!
Post by: Neil Waldhauer on January 04, 2026, 03:46:07 pm
For my Lenovo Thinkpad X13 Gen 2, the "Accessible to system" memory reported by mem /v is 2267 MB

And this is a "ThinkPad Ethernet Extension Adapter Gen 2" I am using for Ethernet. The X13 gen 2 and the T14s gen 2 share a hardware manual, so they are very similar.

I also have the Lenovo Thinkpad USB-C Doc Gen 2, so I plan to learn a lot more about USB support under ArcaOS.