No kernel module or 3D acceleration whatsoever, the vesa driver artifacts the screen and locks the system after closing Xorg.

lspci -vmmnn

Slot:	01:00.0
Class:	VGA compatible controller [0300]
Vendor:	Silicon Integrated Systems [SiS] [1039]
Device:	661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter [6330]
SVendor:	ASUSTeK Computer Inc. [1043]
SDevice:	SiS Real 256E (ASUS P5S800-VM motherboard) [8113]

lspci -nnk

01:00.0 VGA compatible controller [0300]: Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter [1039:6330]
	Subsystem: ASUSTeK Computer Inc. SiS Real 256E (ASUS P5S800-VM motherboard) [1043:8113]
	Kernel modules: sisfb

lspci -vvnnk

01:00.0 VGA compatible controller [0300]: Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter [1039:6330] (prog-if 00 [VGA controller])
	Subsystem: ASRock Incorporation 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter [1849:6331]
	Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin A routed to IRQ 11
	BIST result: 00
	Region 0: Memory at c0000000 (32-bit, prefetchable) [size=128M]
	Region 1: Memory at cfee0000 (32-bit, non-prefetchable) [size=128K]
	Region 2: I/O ports at bc00 [size=128]
	[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
	Capabilities: [40] Power Management version 2
		Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [50] AGP version 3.0
		Status: RQ=256 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3+ Rate=x4,x8
		Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW- Rate=<none>

glxheads

  Display:     0x1106d20
  Window:      0xe00002
  Context:     0x111a950
  GL_VERSION:  3.1 Mesa 19.1.1
  GL_VENDOR:   VMware, Inc.
  GL_RENDERER: llvmpipe (LLVM 8.0, 128 bits)