我的是lubuntu15。10升级到16.04后显示器的分辨率只能设成1024无法再设成1920了，请问这个问题如何解决？谢谢！

把下面指令 複製 貼進終端機 執行
1-1. uname -a
1-2. sudo lspci -knn
1-3. sudo lshw -numeric -class video
1-4. sudo ubuntu-drivers devices
把結果全部直接 選取/複製/貼上來
目的 看看是否已經安裝妥適顯卡驅動

谢谢，操作结果如下：

lomandv@lomandv-P5W-DH-Deluxe:~$ uname -a
Linux lomandv-P5W-DH-Deluxe 4.4.0-24-generic #43-Ubuntu SMP Wed Jun 8 19:27:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
lomandv@lomandv-P5W-DH-Deluxe:~$ sudo lspci -knn
[sudo] lomandv 的密码：
00:00.0 Host bridge [0600]: Intel Corporation 82975X Memory Controller Hub [8086:277c] (rev c0)
Subsystem: ASUSTeK Computer Inc. P5WDG2 WS Professional motherboard [1043:8178]
Kernel modules: i82975x_edac
00:01.0 PCI bridge [0604]: Intel Corporation 82975X PCI Express Root Port [8086:277d] (rev c0)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1b.0 Audio device [0403]: Intel Corporation NM10/ICH7 Family High Definition Audio Controller [8086:27d8] (rev 01)
Subsystem: ASUSTeK Computer Inc. NM10/ICH7 Family High Definition Audio Controller [1043:81d8]
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 1 [8086:27d0] (rev 01)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.3 PCI bridge [0604]: Intel Corporation NM10/ICH7 Family PCI Express Port 4 [8086:27d6] (rev 01)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.4 PCI bridge [0604]: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 5 [8086:27e0] (rev 01)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.5 PCI bridge [0604]: Intel Corporation 82801GR/GH/GHM (ICH7 Family) PCI Express Port 6 [8086:27e2] (rev 01)
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #1 [8086:27c8] (rev 01)
Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard [1043:8179]
Kernel driver in use: uhci_hcd
00:1d.1 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #2 [8086:27c9] (rev 01)
Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard [1043:8179]
Kernel driver in use: uhci_hcd
00:1d.2 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #3 [8086:27ca] (rev 01)
Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard [1043:8179]
Kernel driver in use: uhci_hcd
00:1d.3 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB UHCI Controller #4 [8086:27cb] (rev 01)
Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard [1043:8179]
Kernel driver in use: uhci_hcd
00:1d.7 USB controller [0c03]: Intel Corporation NM10/ICH7 Family USB2 EHCI Controller [8086:27cc] (rev 01)
Subsystem: ASUSTeK Computer Inc. P5KPL-VM,P5LD2-VM Mainboard [1043:8179]
Kernel driver in use: ehci-pci
00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev e1)
00:1f.0 ISA bridge [0601]: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge [8086:27b8] (rev 01)
Subsystem: ASUSTeK Computer Inc. P5KPL-VM Motherboard [1043:8179]
Kernel driver in use: lpc_ich
Kernel modules: intel_rng, lpc_ich, leds_ss4200
00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] (rev 01)
Subsystem: ASUSTeK Computer Inc. P5KPL-VM Motherboard [1043:8179]
Kernel driver in use: ata_piix
Kernel modules: pata_acpi
00:1f.2 IDE interface [0101]: Intel Corporation NM10/ICH7 Family SATA Controller [IDE mode] [8086:27c0] (rev 01)
Subsystem: ASUSTeK Computer Inc. NM10/ICH7 Family SATA Controller [IDE mode] [1043:2601]
Kernel driver in use: ata_piix
Kernel modules: pata_acpi
00:1f.3 SMBus [0c05]: Intel Corporation NM10/ICH7 Family SMBus Controller [8086:27da] (rev 01)
Subsystem: ASUSTeK Computer Inc. P5KPL-VM Motherboard [1043:8179]
Kernel modules: i2c_i801
01:03.0 FireWire (IEEE 1394) [0c00]: Texas Instruments TSB43AB22A IEEE-1394a-2000 Controller (PHY/Link) [iOHCI-Lynx] [104c:8023]
Subsystem: ASUSTeK Computer Inc. P5W DH Deluxe Motherboard [1043:815b]
Kernel driver in use: firewire_ohci
Kernel modules: firewire_ohci
02:00.0 SATA controller [0106]: JMicron Technology Corp. JMB363 SATA/IDE Controller [197b:2363] (rev 03)
Subsystem: ASUSTeK Computer Inc. P5B [JMB363] [1043:81e4]
Kernel driver in use: ahci
Kernel modules: ahci
02:00.1 IDE interface [0101]: JMicron Technology Corp. JMB363 SATA/IDE Controller [197b:2363] (rev 03)
Subsystem: ASUSTeK Computer Inc. P5B [JMB363] [1043:81e4]
Kernel driver in use: pata_jmicron
Kernel modules: pata_jmicron, pata_acpi
03:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller [11ab:4362] (rev 20)
Subsystem: ASUSTeK Computer Inc. Marvell 88E8053 Gigabit Ethernet controller PCIe (Asus) [1043:8142]
Kernel driver in use: sky2
Kernel modules: sky2
04:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller [11ab:4362] (rev 20)
Subsystem: ASUSTeK Computer Inc. Marvell 88E8053 Gigabit Ethernet controller PCIe (Asus) [1043:8142]
Kernel driver in use: sky2
Kernel modules: sky2
06:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV515 PRO [Radeon X1300/X1550 Series] [1002:7142]
Subsystem: ASUSTeK Computer Inc. EAX1300PRO/TD/256M [1043:0142]
Kernel driver in use: radeon
Kernel modules: radeon
06:00.1 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] RV515 PRO [Radeon X1300/X1550 Series] (Secondary) [1002:7162]
Subsystem: ASUSTeK Computer Inc. RV515 PRO [Radeon X1300/X1550 Series] (Secondary) [1043:0143]
lomandv@lomandv-P5W-DH-Deluxe:~$ sudo lshw -numeric -class video
*-display:0
description: VGA compatible controller
product: RV515 PRO [Radeon X1300/X1550 Series] [1002:7142]
vendor: Advanced Micro Devices, Inc. [AMD/ATI] [1002]
physical id: 0
bus info: pci@0000:06:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=radeon latency=0
resources: irq:16 memory:d0000000-dfffffff memory:ff9f0000-ff9fffff ioport:c800(size=256) memory:ff9c0000-ff9dffff
*-display:1 UNCLAIMED
description: Display controller
product: RV515 PRO [Radeon X1300/X1550 Series] (Secondary) [1002:7162]
vendor: Advanced Micro Devices, Inc. [AMD/ATI] [1002]
physical id: 0.1
bus info: pci@0000:06:00.1
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress bus_master cap_list
configuration: latency=0
resources: memory:ff9e0000-ff9effff
lomandv@lomandv-P5W-DH-Deluxe:~$ sudo ubuntu-drivers devices
== cpu-microcode.py ==
driver : intel-microcode - distro non-free

lomandv@lomandv-P5W-DH-Deluxe:~$

1. AMD 顯卡
1-1. 閉源驅動 fglrx 參閱
1-1-1. viewtopic.php?p=3169003#p3169003
1-1-2. http://support.amd.com/en-us/download/d ... x%20x86_64
Description:
Automated installer and Display Drivers for X.Org 6.7, 6.8, 6.9, 7.0, 7.1, 7.2, 7.3, or 7.4
1-1-2-1. http://packages.ubuntu.com/search?suite ... chon=names
目前可以使用的 xorg 套件是 7.6 / 7.7 遠超過 7.4
1-2. 開源驅動 radeon 參閱
https://help.ubuntu.com/community/Radeo ... _supported
Ubuntu 16.04 and 15.10: look at the 15.10 column.
RV505/RV515/RV516/RV550
Radeon X1300/X1400/X1500/X1550/X2300
15.10 v
表示 在 16.04
X1300/X1550 在
1-2. RV515 PRO 跟 RV515 是否相同 ? 待查
意思是 RV515 PRO 是否也在 開源驅動 radeon 支援名單內 ? 待查
1-3. http://pciids.sourceforge.net/v2.2/pci.ids
7140 RV515 [Radeon X1300/X1550/X1600 Series]
7142 RV515 PRO [Radeon X1300/X1550 Series]
7146 RV515 [Radeon X1300/X1550]
...
顯然 RV515 及 RV515 PRO 分屬於不同的 pci-id 碼
7162 RV515 PRO [Radeon X1300/X1550 Series] (Secondary)
1-3-1. 意思是 RV515 PRO 是否在 開源驅動 radeon 支援名單內 ? 待查

2. 參閱以前文章
viewtopic.php?f=42&t=466453

感谢老师的细心指导，有点复杂，待我慢慢梳理，然后再几老师报告和请教，谢谢！！