Hi, sorry again, I thought it was in my paste from lshw above, but it wasn’t. There is only the on-board integrated intel graphics:
*-display
description: VGA compatible controller
product: Haswell-ULT Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:43 memory:e0000000-e03fffff memory:d0000000-dfffffff ioport:1800(size=64) memory:c0000-dffff
Is the ultimate answer simply that darktable 2.4.0 will be slow on this computer? What changed from previous versions to make this so? I can’t remember exactly which previous version I was using, but exports took maybe a minute or two for the same kinds of raw files on this same computer…