This problem appears from at least 11.04 till at least 12.04.
Usually if you want to open one of six virtual terminals, you press hotkeys Ctrl+Alt+F[1-6] (or Ctrl+Alt+F7 to go back to X).
But I have a problem on every build I've tested that virtual terminals which are opened with Alt+F[1-6] (Ctrl is not used). So if you want just to close an application (Alt+F4) or to open an "Execute" dialog (Alt+F2), you firstly get #4 or #2 virtual terminal and after that when you come back to #7 (X), the requested action is executed.
The only solution for now I've found by experiment is restarting the X user session. So every time I boot in Ubuntu, I have to re-login to cure this bug till my next boot.
I've looked for solutions in the Internet, but my question formulations have been luring me to other problems, very far from mine.
Hardware info:
dmidecode 2.11
SMBIOS 2.6 present.
63 structures occupying 2519 bytes.
Table at 0x000E0850.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Phoenix Technologies Ltd.
Version: 05FI
Release Date: 10/12/2011
Address: 0xE0000
Runtime Size: 128 kB
ROM Size: 2560 kB
Characteristics:
PCI is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
EDD is supported
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
NEC PC-98
ACPI is supported
USB legacy is supported
BIOS boot specification is supported
Function key-initiated network boot is supported
Targeted content distribution is supported
BIOS Revision: 0.1
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: SAMSUNG ELECTRONICS CO., LTD.
Product Name: 300V3A/300V4A/300V5A/200A4B/200A5B
Version: 0.1
Serial Number: HN6B93QBC00323
UUID: 1FA57720-1DD2-11B2-8000-B933AB406D0D
Wake-up Type: Other
SKU Number: System SKUNumber
Family: HuronRiver System
Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: SAMSUNG ELECTRONICS CO., LTD.
Product Name: 300V3A/300V4A/300V5A/200A4B/200A5B
Version: FAB1
Serial Number: 123490EN400015
Asset Tag: Base Board Asset Tag
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Part Component
Chassis Handle: 0x0000
Type: Motherboard
Contained Object Handles: 0
Handle 0x0003, DMI type 3, 21 bytes
Chassis Information
Manufacturer: SAMSUNG ELECTRONICS CO., LTD.
Type: Laptop
Lock: Not Present
Version: 0.1
Serial Number: 123490EN400015
Asset Tag: Asset Tag
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Other
Security Status: Other
OEM Information: 0x00000000
Height: Unspecified
Number Of Power Cords: 1
Contained Elements: 0
Handle 0x0004, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: Keyboard
External Connector Type: PS/2
Port Type: Keyboard Port
Handle 0x0005, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: Mouse
External Connector Type: PS/2
Port Type: Mouse Port
Handle 0x0006, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: Other
External Reference Designator: COM 1
External Connector Type: None
Port Type: Serial Port 16550A Compatible
Handle 0x0007, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 1#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 2#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 3#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 4#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 5#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 6#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 7#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000E, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 8#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x000F, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 9#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0010, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 10#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0011, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 11#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0012, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 12#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0013, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 13#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0014, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: USB2.0 - 14#
External Connector Type: Access Bus (USB)
Port Type: USB
Handle 0x0015, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: Ethernet
External Connector Type: RJ-45
Port Type: Network Port
Handle 0x0016, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: SATA Port 1 J8J1
Internal Connector Type: SAS/SATA Plug Receptacle
External Reference Designator: None
External Connector Type: None
Port Type: SATA
Handle 0x0017, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: SATA Port 2 J7G1
Internal Connector Type: SAS/SATA Plug Receptacle
External Reference Designator: None
External Connector Type: None
Port Type: SATA
Handle 0x0018, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: SATA Port 3(ODD) J9E7
Internal Connector Type: SAS/SATA Plug Receptacle
External Reference Designator: None
External Connector Type: None
Port Type: SATA
Handle 0x0019, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: eSATA Port 1 J6J1
External Connector Type: SAS/SATA Plug Receptacle
Port Type: SATA
Handle 0x001A, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: eSATA Port 2 J7J1
External Connector Type: SAS/SATA Plug Receptacle
Port Type: SATA
Handle 0x001B, DMI type 8, 9 bytes
Port Connector Information
Internal Reference Designator: None
Internal Connector Type: None
External Reference Designator: SATA Port 6(Docking)
External Connector Type: SAS/SATA Plug Receptacle
Port Type: SATA
Handle 0x001C, DMI type 9, 17 bytes
System Slot Information
Designation: PEG Gen1/Gen2 X16
Type: x16 PCI Express x16
Current Usage: In Use
Length: Long
ID: 0
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:00.0
Handle 0x001D, DMI type 9, 17 bytes
System Slot Information
Designation: PCI-Express 1 X1
Type: x1 PCI Express
Current Usage: In Use
Length: Short
ID: 1
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:00.0
Handle 0x001E, DMI type 9, 17 bytes
System Slot Information
Designation: PCI-Express 2 X1
Type: x1 PCI Express
Current Usage: Available
Length: Short
ID: 2
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:00.0
Handle 0x001F, DMI type 9, 17 bytes
System Slot Information
Designation: PCI-Express 3 X1
Type: x1 PCI Express
Current Usage: Available
Length: Short
ID: 3
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:00.0
Handle 0x0020, DMI type 9, 17 bytes
System Slot Information
Designation: PCI-Express 4 X1
Type: x1 PCI Express
Current Usage: In Use
Length: Short
ID: 4
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:00.0
Handle 0x0021, DMI type 9, 17 bytes
System Slot Information
Designation: PCI-Express 5 X1
Type: x1 PCI Express
Current Usage: Available
Length: Short
ID: 5
Characteristics:
3.3 V is provided
Opening is shared
PME signal is supported
Bus Address: 0000:00:00.0
Handle 0x0022, DMI type 10, 6 bytes
On Board Device Information
Type: Video
Status: Enabled
Description: Intel(R) Extreme Graphics 3 Controller
Handle 0x0023, DMI type 10, 6 bytes
On Board Device Information
Type: Sound
Status: Enabled
Description: Intel(R) Azalia Audio Device
Handle 0x0024, DMI type 11, 5 bytes
OEM Strings
String 1: AAABAAAAAAAA
String 2: 2012/02/22
Handle 0x0025, DMI type 12, 5 bytes
System Configuration Options
Handle 0x0026, DMI type 13, 22 bytes
BIOS Language Information
Language Description Format: Abbreviated
Installable Languages: 4
en-US
fr-FR
ja-JP
ko-KR
Currently Installed Language: en-US
Handle 0x0027, DMI type 22, 26 bytes
Portable Battery
Location: Rear
Manufacturer: Intel Corp.
Manufacture Date: 2008
Serial Number: 1.0
Name: Smart Battery
Design Capacity: Unknown
Design Voltage: Unknown
SBDS Version: V1.0
Maximum Error: Unknown
SBDS Chemistry: Lithium-Ion
OEM-specific Information: 0x00000000
Handle 0x0028, DMI type 32, 11 bytes
System Boot Information
Status: No errors detected
Handle 0x0029, DMI type 18, 23 bytes
32-bit Memory Error Information
Type: OK
Granularity: Unknown
Operation: Unknown
Vendor Syndrome: Unknown
Memory Array Address: Unknown
Device Address: Unknown
Resolution: Unknown
Handle 0x002A, DMI type 21, 7 bytes
Built-in Pointing Device
Type: Mouse
Interface: PS/2
Buttons: 2
Handle 0x002B, DMI type 23, 13 bytes
System Reset
Status: Disabled
Watchdog Timer: Present
Boot Option: Do Not Reboot
Boot Option On Limit: Do Not Reboot
Reset Count: Unknown
Reset Limit: Unknown
Timer Interval: Unknown
Timeout: Unknown
Handle 0x002C, DMI type 24, 5 bytes
Hardware Security
Power-On Password Status: Unknown
Keyboard Password Status: Unknown
Administrator Password Status: Unknown
Front Panel Reset Status: Unknown
Handle 0x002D, DMI type 27, 14 bytes
Cooling Device
Type: Unknown
Status: Unknown
OEM-specific Information: 0x00000090
Nominal Speed: Unknown Or Non-rotating
Handle 0x002E, DMI type 39, 22 bytes
System Power Supply
Location: TBD by ODM
Name: TBD by ODM
Manufacturer: TBD by ODM
Serial Number: TBD by ODM
Asset Tag: TBD by ODM
Model Part Number: TBD by ODM
Revision: 1.0
Max Power Capacity: Unknown
Status: Present, OK
Type: Battery
Input Voltage Range Switching: Other
Plugged: Yes
Hot Replaceable: Yes
Handle 0x002F, DMI type 4, 42 bytes
Processor Information
Socket Designation: CPU
Type: Central Processor
Family: Core i7
Manufacturer: Intel(R) Corporation
ID: A7 06 02 00 FF FB EB BF
Signature: Type 0, Family 6, Model 42, Stepping 7
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Core(TM) i5-2450M CPU @ 2.50GHz
Voltage: 1.2 V
External Clock: 100 MHz
Max Speed: 2500 MHz
Current Speed: 2500 MHz
Status: Populated, Enabled
Upgrade: ZIF Socket
L1 Cache Handle: 0x0030
L2 Cache Handle: 0x0031
L3 Cache Handle: 0x0032
Serial Number: Not Supported by CPU
Asset Tag: TBD By OEM
Part Number: TBD By OEM
Core Count: 2
Core Enabled: 2
Thread Count: 4
Characteristics:
64-bit capable
Handle 0x0030, DMI type 7, 19 bytes
Cache Information
Socket Designation: L1-Cache
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Through
Location: Internal
Installed Size: 64 kB
Maximum Size: 64 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Data
Associativity: 8-way Set-associative
Handle 0x0031, DMI type 7, 19 bytes
Cache Information
Socket Designation: L2-Cache
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Write Through
Location: Internal
Installed Size: 256 kB
Maximum Size: 256 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Data
Associativity: 8-way Set-associative
Handle 0x0032, DMI type 7, 19 bytes
Cache Information
Socket Designation: L3-Cache
Configuration: Enabled, Not Socketed, Level 3
Operational Mode: Write Back
Location: Internal
Installed Size: 3072 kB
Maximum Size: 3072 kB
Supported SRAM Types:
Synchronous
Installed SRAM Type: Synchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: 12-way Set-associative
Handle 0x0033, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 16 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0x0034, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x0033
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: SODIMM
Set: None
Locator: ChannelA-DIMM0
Bank Locator: BANK 0
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MHz
Manufacturer: Samsung
Serial Number: B41CC40D
Asset Tag: 9876543210
Part Number: M471B5773CHS-CH9
Rank: Unknown
Handle 0x0035, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x0034
Memory Array Mapped Address Handle: 0x003A
Partition Row Position: Unknown
Interleave Position: 1
Interleaved Data Depth: 2
Handle 0x0036, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x0033
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelA-DIMM1
Bank Locator: BANK 1
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: 9876543210
Part Number: Not Specified
Rank: Unknown
Handle 0x0037, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x0033
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: SODIMM
Set: None
Locator: ChannelB-DIMM0
Bank Locator: BANK 2
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MHz
Manufacturer: Samsung
Serial Number: 01190CD6
Asset Tag: 9876543210
Part Number: M471B5273CM0-CH9
Rank: Unknown
Handle 0x0038, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00080000000
Ending Address: 0x0017FFFFFFF
Range Size: 4 GB
Physical Device Handle: 0x0037
Memory Array Mapped Address Handle: 0x003A
Partition Row Position: Unknown
Interleave Position: 2
Interleaved Data Depth: 2
Handle 0x0039, DMI type 17, 28 bytes
Memory Device
Array Handle: 0x0033
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: DIMM
Set: None
Locator: ChannelB-DIMM1
Bank Locator: BANK 3
Type: Unknown
Type Detail: None
Speed: Unknown
Manufacturer: Not Specified
Serial Number: Not Specified
Asset Tag: 9876543210
Part Number: Not Specified
Rank: Unknown
Handle 0x003A, DMI type 19, 15 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0017FFFFFFF
Range Size: 6 GB
Physical Array Handle: 0x0033
Partition Width: 4
Handle 0x003B, DMI type 129, 8 bytes
OEM-specific Type
Header and Data:
81 08 3B 00 01 01 02 01
Strings:
Intel_ASF
Intel_ASF_001
Handle 0x003C, DMI type 131, 64 bytes
OEM-specific Type
Header and Data:
83 40 3C 00 31 00 00 00 00 00 00 00 00 00 00 00
F8 00 49 1C FF FF FF FF 09 C0 00 00 01 00 07 00
40 04 0D 00 00 00 00 00 C8 00 FF FF 00 00 00 00
00 00 00 00 36 00 00 00 76 50 72 6F 00 00 00 00
Handle 0x003D, DMI type 15, 29 bytes
System Event Log
Area Length: 18 bytes
Header Start Offset: 0x0000
Header Length: 16 bytes
Data Start Offset: 0x0010
Access Method: General-purpose non-volatile data functions
Access Address: 0x00F0
Status: Valid, Not Full
Change Token: 0x00000000
Header Format: Type 1
Supported Log Type Descriptors: 3
Descriptor 1: POST error
Data Format 1: POST results bitmap
Descriptor 2: Single-bit ECC memory error
Data Format 2: Multiple-event
Descriptor 3: Multi-bit ECC memory error
Data Format 3: Multiple-event
Handle 0x003E, DMI type 127, 4 bytes
End Of Table
