[lubuntu] Lubuntu 16.04 - wrong video resolution after installation, but OK with live CD

Hi,

Lubuntu 16.04 LTS i386 on Acer Aspire 3005WLMi with SIS M760GX video chip (2 GB RAM, 160 GB HD)

When I run live CD I get a 1024 x 768 resolution, that is good for me (max resol should be 1280 x 800... maybe)

After installing this distribution from the same live CD, max resolution become 640 x 480.

I don't see differences between lspci - k with Live CD and after installation.

How can I solve this problem?

Thank you

Alby

lspci - k (installed Lubuntu)

760/M760 Host (rev 03)
Keel driver in use: agpgart-amd64
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] AGP Port (virtual PCI-to-PCI bridge)
Keel modules: shpchp
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS963 [MuTIOL Media IO] LPC Controller (rev 25)
00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2/3 SMBus controller
Keel driver in use: sis96x_smbus
Keel modules: i2c_sis96x
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 IDE Controller
Subsystem: Acer Incorporated [ALI] 5513 IDE Controller
Keel driver in use: pata_sis
Keel modules: pata_acpi
00:02.6 Modem: Silicon Integrated Systems [SiS] AC'97 Modem Controller (rev a0)
Subsystem: Acer Incorporated [ALI] AC'97 Modem Controller
Keel modules: snd_intel8x0m
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller (rev a0)
Subsystem: Acer Incorporated [ALI] SiS7012 AC'97 Sound Controller
Keel driver in use: snd_intel8x0
Keel modules: snd_intel8x0
00:03.0 USB controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
Subsystem: Acer Incorporated [ALI] USB 1.1 Controller
Keel driver in use: ohci-pci
00:03.1 USB controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
Subsystem: Acer Incorporated [ALI] USB 1.1 Controller
Keel driver in use: ohci-pci
00:03.2 USB controller: Silicon Integrated Systems [SiS] USB 2.0 Controller
Subsystem: Acer Incorporated [ALI] USB 2.0 Controller
Keel driver in use: ehci-pci
00:04.0 Etheet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Etheet (rev 91)
Subsystem: Acer Incorporated [ALI] SiS900 PCI Fast Etheet
Keel driver in use: sis900
Keel modules: sis900
00:06.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus Controller
Subsystem: Acer Incorporated [ALI] PCI1510 PC card Cardbus Controller
Keel driver in use: yenta_cardbus
Keel modules: yenta_socket
00:0b.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
Subsystem: AMBIT Microsystem Corp. TravelMate 2410
Keel driver in use: b43-pci-bridge
Keel modules: ssb
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] DRAM Controller
Keel modules: amd64_edac_mod
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
Keel driver in use: k8temp
Keel modules: k8temp
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter
Subsystem: Acer Incorporated [ALI] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter
Keel modules: sisfb

------------

lspci - k (live CD)

00:00.0 Host bridge: Silicon Integrated Systems [SiS] 760/M760 Host (rev 03)
Keel driver in use: agpgart-amd64
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] AGP Port (virtual PCI-to-PCI bridge)
Keel modules: shpchp
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS963 [MuTIOL Media IO] LPC Controller (rev 25)
00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2/3 SMBus controller
Keel driver in use: sis96x_smbus
Keel modules: i2c_sis96x
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 IDE Controller
Subsystem: Acer Incorporated [ALI] 5513 IDE Controller
Keel driver in use: pata_sis
Keel modules: pata_acpi
00:02.6 Modem: Silicon Integrated Systems [SiS] AC'97 Modem Controller (rev a0)
Subsystem: Acer Incorporated [ALI] AC'97 Modem Controller
Keel modules: snd_intel8x0m
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller (rev a0)
Subsystem: Acer Incorporated [ALI] SiS7012 AC'97 Sound Controller
Keel driver in use: snd_intel8x0
Keel modules: snd_intel8x0
00:03.0 USB controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
Subsystem: Acer Incorporated [ALI] USB 1.1 Controller
Keel driver in use: ohci-pci
00:03.1 USB controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
Subsystem: Acer Incorporated [ALI] USB 1.1 Controller
Keel driver in use: ohci-pci
00:03.2 USB controller: Silicon Integrated Systems [SiS] USB 2.0 Controller
Subsystem: Acer Incorporated [ALI] USB 2.0 Controller
Keel driver in use: ehci-pci
00:04.0 Etheet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Etheet (rev 91)
Subsystem: Acer Incorporated [ALI] SiS900 PCI Fast Etheet
Keel driver in use: sis900
Keel modules: sis900
00:06.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus Controller
Subsystem: Acer Incorporated [ALI] PCI1510 PC card Cardbus Controller
Keel driver in use: yenta_cardbus
Keel modules: yenta_socket
00:0b.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
Subsystem: AMBIT Microsystem Corp. TravelMate 2410
Keel driver in use: b43-pci-bridge
Keel modules: ssb
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] DRAM Controller
Keel modules: amd64_edac_mod
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
Keel driver in use: k8temp
Keel modules: k8temp
01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter
Subsystem: Acer Incorporated [ALI] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter
Keel modules: sisfb