英特尔显卡的分辨率有限

Question

我的戴尔笔记本电脑有一个驱动 1600x900 LCD 的 Intel Graphics HD 3000。但是，出于某种原因，Ubuntu 13.04 和 14.04 不允许我将分辨率设置为 1024x768 以上。任何人都可以提供任何建议吗？谢谢！

$ lshw
<snip>
*-display UNCLAIMED
         description: VGA compatible controller
         product: 2nd Generation Core Processor Family Integrated Graphics Controller
         vendor: Intel Corporation
         physical id: 2
         bus info: pci@0000:00:02.0
         version: 09
         width: 64 bits
         clock: 33MHz
         capabilities: vga_controller cap_list
         configuration: latency=0
         resources: memory:f1400000-f17fffff memory:e0000000-efffffff ioport:5000(size=64)

$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 800 x 600, current 1024 x 768, maximum 1024 x 768
default connected 1024x768+0+0 0mm x 0mm
   1024x768       61.0*
   800x600        61.0

# lspci -vvnnk
<snip>
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
    Subsystem: Dell Device [1028:04c4]
    Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Interrupt: pin A routed to IRQ 16
    Region 0: Memory at f1400000 (64-bit, non-prefetchable) [size=4M]
    Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
    Region 4: I/O ports at 5000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit-
            Address: 00000000  Data: 0000
    Capabilities: [d0] 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: [a4] PCI Advanced Features
            AFCap: TP+ FLR+
            AFCtrl: FLR-
            AFStatus: TP-
<snip>
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF108M [GeForce GT 525M] [10de:0df5] (rev ff) (prog-if ff)
    !!! Unknown header type 7f

Answer 1

最近发现 14.04 也受到影响后，我做了更多挖掘并发现了一些事情：

• 引导nomodeset是问题的直接原因；我这样做只是因为有问题的笔记本电脑无法启动。
• 相反，启动noacpi解决了视频问题，但引起了其他问题。特别是，仅检测到一个 CPU，否则会看到两个（或四个超线程）CPU。
• 相反，引导acpi_osi=Linux acpi_backlight=vendor解决了几乎所有问题；唯一剩下的问题是风扇噪音过大。
• 更新到最新的可用 BIOS（结合上一条）给了我一个完整的解决方案。