1920x1200 display connected on my 24/7 box running 5 web browsers & countless tabs, plus other software. BIOS not checked for preallocated VRAM:
# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4th Generation Core Processor Family Integrated Graphics Controller (rev 06) # **Haswell**
# lspci -v -s 00:02.0
00:02.0 VGA compatible controller: Intel Corporation 4th Generation Core Processor Family Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller])
Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7850
Flags: bus master, fast devsel, latency 0, IRQ 32
Memory at f7800000 (64-bit, non-prefetchable) **size=4M**]
Memory at e0000000 (64-bit, prefetchable) **size=256M**]
I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
2560x1440 & 1920x1200 displays connected. Only Konsole running since boot. BIOS setting for pre-allocated VRAM: 128M[/size]:
# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev 04) # **Kaby Lake**
# lspci -v -s 00:02.0
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev 04) (prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: ASUSTeK Computer Inc. Device 8694
Flags: bus master, fast devsel, latency 0, IRQ 134
Memory at f6000000 (64-bit, non-prefetchable) **size=16M**]
Memory at e0000000 (64-bit, prefetchable) **size=256M**]
I/O ports at f000 [size=64]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [100] Process Address Space ID (PASID)
Capabilities: [200] Address Translation Service (ATS)
Capabilities: [300] Page Request Interface (PRI)
Kernel driver in use: i915
Kernel modules: i915
Same 2560x1440 & 1920x1200 displays connected. Only Konsole running since boot. BIOS setting for pre-allocated VRAM: 64M[/size][/size]:
# lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation **RocketLake**-S GT1 [UHD Graphics 730] (rev 04)
# lspci -v -s 00:02.0
00:02.0 VGA compatible controller: Intel Corporation RocketLake-S GT1 [UHD Graphics 730] (rev 04) (prog-if 00 [VGA controller])
DeviceName: Onboard - Video
Subsystem: ASUSTeK Computer Inc. Device 8694
Flags: bus master, fast devsel, latency 0, IRQ 141
Memory at 6000000000 (64-bit, non-prefetchable) **size=16M**]
Memory at 4000000000 (64-bit, prefetchable) **size=256M**]
I/O ports at 3000 [size=64]
Expansion ROM at 000c0000 [virtual] [disabled] [size=128]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable+ 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [100] Process Address Space ID (PASID)
Capabilities: [200] Address Translation Service (ATS)
Capabilities: [300] Page Request Interface (PRI)
Kernel driver in use: i915
Kernel modules: i915
I rechecked the Rocket Lake with a 1680x1050 display also connected, but result of the two lscpi commands did not change. I rebooted once more and changed VRAM pre-allocation from 64M to 1024M, and again lscpi output did not change.
I’ve never found how to show more than what the above shows about VRAM usage with Intel IGPUs, but I would be interested to know more.[/size][/size][/size]