Disclaimer : The purpose of this thread is to list known Lucid Lynx issues and bugs, and give the corresponding workarounds and launchpad entries.Feel free to propose other known Lucid Lynx bugs to be listed here but please provide a link to the workaround and a link to the corresponding launchpad entry.-------------------------------------------------Warning: Before upgrading or attempting a reinstall make sure you backup essential files.Please read the Release Notes and Overview:-http://www.ubuntu.com/getubuntu/releasenotes/1004http://www.ubuntu.com/getubuntu/releasenotes/1004overviewUpgrade 8.04 -> 10.04 can break apt-get.The package flashplugin-nonfree has been problematic when upgrading 8.04 -> 10.04 and breaks apt-get;Bug ReportFor those not wanting to read the bug report in detail, the fix is :
Code:sudo rm /var/lib/dpkg/info/flashplugin-nonfree.prerm
sudo dpkg --remove --force-remove-reinstreq flashplugin-nonfree
sudo dpkg --purge --force-remove-reinstreq flashplugin-nonfreeNautilus location bar, bread crumbs vs text based.Breadcrumbs is now the default. The button to switch between the two has been removed. Users can switch with ctrl+l and then esc to revert to breadcrumbs. To permanently switch to text users have to use gconf-editor from a terminal. Note: gconf-editor has been removed from the menus. The key is.apps>nautilus> preferences> always_use_location_entryMinimize, Maximize and Close button placement.A decision has been taken to move the placement to the left. Mark Shuttleworth explained that this was because "something" is going to be placed in the right hand area in the next release. Moving the buttons now would help enable this change.[[Update ]http://www.markshuttleworth.com/archives/333The buttons are in the old location on all default themes apart from Ambiance,Radiance and Dust, If you still want the Ambiance ,Radiance or Dust theme but with buttons on the right, choose one of those other themes and use the Customize button to achieve what you want. e.g.1. System > Preferences > Appearance2. Select the theme icon "New Wave"3. Click the button "Customize.."4. Select tab "Controls" and select "Ambiance"5. Select tab "Window border" and select "Ambiance"6. Select tab "Icons" and scroll down and select "Ubuntu-mono-dark"7. Select "Save Theme" to your choice.Using gconf-editor is not the right approach as this could bork future themes. This change makes it easier for themes to do interesting things with window borders. Unfortunately, if the wrong approach spreads, they won't be able to do that.Problem with Huawei usb mobile broadband dongles. Please see this bug report and click the affects me button if you have this bug. A fix is committed. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/446146.Also fix/workaround here. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/509547 See post #32Bootup/Plymouth. Users should experience a much faster boot however some users may experience problems with Plymouth after the nVidia graphics driver has been enabled. Users may experience plymouth using lower graphics resolution. https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/551013Graphical solution : http://news.softpedia.com/news/How-to-Fix-the-Big-and-Ugly-Plymouth-Logo-in-Ubuntu-10-04-140810.shtmlCommand line :(Some of the fixes put forward dont work for everyone.)One that works for nVidia and to try is this.
Code:gksu gedit /etc/default/gruband add the line in BOLD.# The resolution used on graphical terminal# note that you can use only modes which your graphic card supports via VBE# you can see them in real GRUB with the command `vbeinfo'#GRUB_GFXMODE=640x480GRUB_GFXPAYLOAD_LINUX=1680x1050 Save the file and run
Code:sudo update-grubThe resolution chosen should be your monitors native resolution.Other graphics card users may get a black screen with flashing cursor and then a very short duration plymouth. https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/540801One fix for this is to create this file.
Code:gksu gedit /etc/initramfs-tools/conf.d/splashand add this option FRAMEBUFFER=y, save the file.Then
Code:sudo update-initramfs -uPlymouth now has a hard dependency on mountall thus trying to remove Plymouth would remove half the OS. The advice is, if you don't want a graphical boot then uninstall any plymouth themes.If the problem is a slow boot, and you have no floppy drive, disable the floppy in the bios. This has been reported as a fix to this. https://bugs.launchpad.net/ubuntu/+source/udisks/+bug/551712If the problem is plymouth not displaying, and a black screen from grub to gdm, this could be due to graphics drivers needing to be loaded quicker. This is bugged.https://bugs.launchpad.net/ubuntu/+source/linux/+bug/539787Plymouth is installed with 2 themes by default you can install more via synaptic.To change themes this code is used.
Code:sudo update-alternatives --config default.plymouthJava. Sun java has been deprecated. Openjdk is now the default, i.e installing ubuntu-restricted-extras with recommends will install openjdk and the icedtea plugin. Openjdk has been certified by Java SE Test Compatibility Kit (TCK) and is compatible with the Java(TM) SE 6 platform on the amd64 (x86_64) and i386 (ix86) architectures. However sun-java is in the partner repo.There's a bug regarding the icedtea plugin and certain applets.https://bugs.launchpad.net/ubuntu/+source/openjdk-6/+bug/551328.Not fixed yet. Workaround may be to create a new Firefox profile.Boot options hidden by default on Desktop and Netbook LIVECDsThe Ubuntu 10.04 LTS Desktop and Netbook CDs feature a new boot interface that is non interactive by default. To configure advanced boot options, press any key at the first boot screen.
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此方法在最新的 Ubuntu 8.04 上测试通过,是对nicky的 “Ubuntu的黑体解决方案”的更新和完善。
这里我以华文黑体 (STHeiti) 作为例子。
如果你不喜欢华文黑体,也可以使用其他黑体来代替,修改方法不变。
使用华文黑体 (STHeiti) 替换 Ubuntu 中文字体方法:
1、下载 STHeiti 字体(暂时短缺,如果有朋友需要可以email我)
下载 stheiti.rar 字体包,解压后复制到 /usr/share/fonts/truetype 下面。一般需要你使用root账号进行操作,普通用户组会遇到命令行错误的问题。
附:root账号启用方法:
其实我个人认为这没有多大必要,因为当你需要 root 的权限时,使用 sudo 便可以了。如果你实在需要在 Ubuntu 中启用 root 帐号的话,那么不妨执行下面的操作:
在终端执行 sudo passwd root 指令后,系统将会提示你设置一个新的 root 帐号密码。
点击 系统 -> 系统设置 -> 登录窗口 菜单,并切换到 Security 选项页,然后选中其下的“允许本地系统管理员登陆”选项。
执行上述两步后,你便可以使用 root 帐号登录 Ubuntu 系统了。
如果要再次禁用 root 帐号,那么可以执行 sudo passwd -l root。
设置 STHeiti.ttf 可读权限:(如果你使用root进行操作可以省略这一步)
sudo chmod a+r /usr/share/fonts/truetype/stheiti.ttf
2、设置 STHeiti 为首选中文字体
7.10中的终端命令:sudo gedit /etc/fonts/language-selector.conf
8.04中的终端命令:sudo gedit /etc/fonts/conf.d/69-language-selector-zh-cn.conf
这个区分非常重要!
找到(多处):
<family>AR PL UMing CN</family> (视排在首位的中文字体为准)
在它的上面一行添加:
7.10中添加:<family>STHeiti</family>
8.04中添加:<string>STHeiti</string>
这个区分非常重要!
然后刷新字体缓存:
sudo fc-cache -f -v
3、设置英文字体和渲染方式
打开 “系统-首选项-外观-字体” 面板:
在字体选项里选择一款英文字体,如:Lucida Grande 或者 Bitstream Vera Sans。
在 “字体渲染” 选项中选择 “次象素平滑” 或者 “最佳形状” 。
所有设置完成,重启X界面(ctrl+alt+backspace),些修改完成!
希望对不了解的朋友和初学者有所帮助。