![东芝 Satellite L75 B7270 上的 Ubuntu 14.04 持续显示问题](https://linux22.com/image/1084083/%E4%B8%9C%E8%8A%9D%20Satellite%20L75%20B7270%20%E4%B8%8A%E7%9A%84%20Ubuntu%2014.04%20%E6%8C%81%E7%BB%AD%E6%98%BE%E7%A4%BA%E9%97%AE%E9%A2%98.png)
我的屏幕最顶部有一条闪烁的细粉线,所有虚拟控制台都带有几条多色垂直闪烁的线,并且控制台文本闪烁。
一些规格:
我在 Toshiba Satellite L75 B7270 上安装了 Ubuntu 14.04 LTS。来自此网址 (http://releases.ubuntu.com/14.04/) 我下载了带有以下描述的映像文件:“PC(Intel x86)桌面映像适用于几乎所有 PC。这包括大多数采用 Intel/AMD/等类型处理器的机器和几乎所有运行 Microsoft Windows 的计算机,以及基于 Intel 处理器的较新的 Apple Macintosh 系统。如果您不确定,请选择此项。”我禁用了安全启动,并从 UEFI 切换到 CSM。
到目前为止,我尝试了一些简单的建议补救措施,但收效甚微。我从 lightdm 切换到 gdm。没有效果。我尝试使用 xrandr 命令更改刷新率,刷新率 60 是唯一可用的选项。我尝试使用“多媒体系统选择器”来修改默认输出。没有效果。当我使用 nomodeset 启动时,我猜你可以称之为部分成功。我的 gui 中的闪烁线消失了,虚拟终端也很好,但正如一位评论者在此处指出的那样(`nomodeset` 有什么作用),性能会受到影响。我移动的每个窗口都会显示一条轨迹,窗口会以奇怪的不流畅的方式淡入淡出,而且在 Firefox 中滚动文本会不流畅,对眼睛很不舒服。这绝不是一个理想的“解决方案”。
以下是一些信息命令的输出:
$ uname -a
3.13.0-32-generic #57-Ubuntu SMP Tue Jul 15 03:51:12 UTC 2014 i686 i686 i686 GNU/Linux
$ lshw -c video
*-display
description: VGA compatible controller
product: Haswell-ULT Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 0b
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:61 memory:b0000000-b03fffff memory:a0000000-afffffff ioport:4000(size=64)
modinfo i915 (some output omitted)
intree: Y
vermagic: 3.13.0-32-generic SMP mod_unload modversions 686
signer: Magrathea: Glacier signing key
sig_key: A7:FC:65:90:FC:4A:8D:85:9A:AE:BD:A2:CA:5D:D0:47:16:24:4F:A0
sig_hashalgo: sha512
parm: invert_brightness:Invert backlight brightness (-1 force normal, 0 machine defaults, 1 force inversion), please report PCI device ID, subsystem vendor and subsystem device ID to [email protected], if your machine needs it. It will then be included in an upcoming module version. (int)
parm: modeset:Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, 1=on, -1=force vga console preference [default]) (int)
parm: fbpercrtc:int
parm: panel_ignore_lid:Override lid status (0=autodetect, 1=autodetect disabled [default], -1=force lid closed, -2=force lid open) (int)
parm: powersave:Enable powersavings, fbc, downclocking, etc. (default: true) (int)
parm: semaphores:Use semaphores for inter-ring sync (default: -1 (use per-chip defaults)) (int)
parm: i915_enable_rc6:Enable power-saving render C-state 6. Different stages can be selected via bitmask values (0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. default: -1 (use per-chip default) (int)
parm: i915_enable_fbc:Enable frame buffer compression for power savings (default: -1 (use per-chip default)) (int)
parm: lvds_downclock:Use panel (LVDS/eDP) downclocking for power savings (default: false) (int)
parm: lvds_channel_mode:Specify LVDS channel mode (0=probe BIOS [default], 1=single-channel, 2=dual-channel) (int)
parm: lvds_use_ssc:Use Spread Spectrum Clock with panels [LVDS/eDP] (default: auto from VBT) (int)
parm: vbt_sdvo_panel_type:Override/Ignore selection of SDVO panel mode in the VBT (-2=ignore, -1=auto [default], index in VBT BIOS table) (int)
parm: reset:Attempt GPU resets (default: true) (bool)
parm: enable_hangcheck:Periodically check GPU activity for detecting hangs. WARNING: Disabling this can cause system wide hangs. (default: true) (bool)
parm: i915_enable_ppgtt:Enable PPGTT (default: true) (int)
parm: enable_psr:Enable PSR (default: false) (int)
parm: preliminary_hw_support:Enable preliminary hardware support. (int)
parm: disable_power_well:Disable the power well when possible (default: true) (int)
parm: enable_ips:Enable IPS (default: true) (int)
parm: fastboot:Try to skip unnecessary mode sets at boot time (default: false) (bool)
parm: enable_pc8:Enable support for low power package C states (PC8+) (default: true) (int)
parm: pc8_timeout:Number of msecs of idleness required to enter PC8+ (default: 5000) (int)
parm: prefault_disable:Disable page prefaulting for pread/pwrite/reloc (default:false). For developers only. (bool)
$ lspci -v
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b) (prog-if 00 [VGA controller])
Subsystem: Toshiba America Info Systems Device f931
Flags: bus master, fast devsel, latency 0, IRQ 61
Memory at b0000000 (64-bit, non-prefetchable) [size=4M]
Memory at a0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
我非常欢迎大家提出建议,并提醒那些铁杆 Linux 迷们,由于我的知识水平只能说是一般,所以有时可能需要一些解释才能让你们明白我的意思。
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我最终安装了 AMD64 版本并启用了 UEFI。闪烁问题仍然存在。
答案1
太长不看哈哈
这可能是图形显示适配器/驱动程序的问题,当 gnome3 是“新的”时我看到了类似的问题(我认为 Unity 是基于 gnome3 的或使用了 gnome3?)我会尝试不同的桌面环境或窗口管理器,尝试 Xubuntu 或 Lubuntu 或 Kubuntu 的实时 usb/cd,或者只安装 xubuntu(xubuntu-desktop 或 xfce4)或 lubuntu(lxde)并使用 xfce 或 lxde 启动,看看这些是否有帮助?
答案2
使用较新的内核解决了这个问题。后来我换了一台电脑,没有详细记录我的解决方案,但我最终尝试了 3.18 内核,解决了这个问题。