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2010. 3. 31. 06:07

Fedora Release 12 Security Issue Other OS/Linux2010. 3. 31. 06:07

Release12(Constantine)
Kernel Linux 2.6.31.5-127.fc12.i686
Gnome2.28.2
Memory 3.0 GB

요약:

SELinux is preventing /sbin/dhclient "execute" access on ld-2.11.so.

상세 설명:

SELinux denied access requested by dhclient. It is not expected that this access
is required by dhclient and this access may signal an intrusion attempt. It is
also possible that the specific version or configuration of the application is
causing it to require additional access.

액세스 허용:

You can generate a local policy module to allow this access - see FAQ
(http://fedora.redhat.com/docs/selinux-faq-fc5/#id2961385) Please file a bug
report.

자세한 정보:

소스 문맥                 system_u:system_r:dhcpc_t:s0
대상 문맥                 system_u:object_r:execmem_exec_t:s0
대상 객체                 ld-2.11.so [ file ]
소스                        dhclient
소스 경로                 /sbin/dhclient
포트                        <알려지지 않음>
호스트                     localhost.localdomain
소스 RPM 패키지          dhclient-4.1.0p1-12.fc12
대상 RPM 패키지          
정책 RPM                    selinux-policy-3.6.32-41.fc12
Selinux 활성화             True
정책 유형                 targeted
MLS 활성화                 True
강제 모드                 Enforcing
플러그인명               catchall
호스트명                  localhost.localdomain
플랫폼                     Linux localhost.localdomain 2.6.31.5-127.fc12.i686
                              #1 SMP Sat Nov 7 21:41:45 EST 2009 i686
통지 카운트              1
초기 화면                 2010년 03월 31일 (수) 오전 06시 02분 26초
마지막 화면              2010년 03월 31일 (수) 오전 06시 02분 26초
로컬 ID                     2799c22a-a341-4454-97a3-9fc5e999a0e5
줄 번호                    

원 감사 메세지          

node=localhost.localdomain type=AVC msg=audit(1269982946.54:22): avc:  denied  { execute } for  pid=2055 comm="dhclient" name="ld-2.11.so" dev=dm-0 ino=3463 scontext=system_u:system_r:dhcpc_t:s0 tcontext=system_u:object_r:execmem_exec_t:s0 tclass=file

node=localhost.localdomain type=SYSCALL msg=audit(1269982946.54:22): arch=40000003 syscall=11 success=no exit=-13 a0=bfd0de46 a1=bfd0b0b4 a2=84d9bc0 a3=84d9bc0 items=0 ppid=1469 pid=2055 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="dhclient" exe="/sbin/dhclient" subj=system_u:system_r:dhcpc_t:s0 key=(null)


:
Posted by Ritz®™

alc888_dump.txt





Ubuntu나 페도라등 리눅스에서 사운드카드 코덱 덤프 받는 방법입니다.

Linux로 부팅하고 난 후, 다음과 같은 명령어를 입력합니다.

<code>cat /proc/asound/card0/codec#1 > ~/Desktop/codec_dump.txt

</code>

:
Posted by Ritz®™

The Alternatives

Users with ATI cards basically have these options:

  1. Open Source Drivers These are stable and nice, but currently have poor 3D performance, if any. If you have a Radeon X1k product or earlier, this is your only option.
  2. The Ubuntu Way Use the restricted-driver management system that comes with Ubuntu to install the drivers.
  3. Third (Fourth?) Party Installer Use envy/jockey or other installer helper.
  4. Install the drivers manually Using the installer downloaded from AMD's site via either package based install or direct install.

[edit] Open Source Drivers

By default, Ubuntu will already try to use one of the open source drivers for your hardware. If the feature set and stability work for you, then you don't need to change anything.

The drivers that may be used are

  • vesa Lowest common denominator across all graphics vendor, not many features.
  • ati Actually a facade that will invoke the radeon driver.
  • radeon Driver support all radeon classes of hardware - with limited 3D for newer cards.
  • radeonhd An alternate driver support R520 hardware and later.

By default there is no configuration file for X anymore, so X will try to do the right thing.

If you run into stability problems with 3D applications using the radeon/radeonhd drivers, consider trying a more recent kernel. mainline-2.6.29.3 did the trick on a few machines.

There's an ongoing debate about how and if the radeon and radeonhd drivers will be used in the future.

[edit] The Ubuntu way

[edit] Restricted Drivers Manager

  • Ubuntu 9.04 (Jaunty) provides a notification saying that there are restricted drivers available
  • Go to the Restricted Drivers Manager and enable the "ATI accelerated graphics driver"
  • Ubuntu will then install and configure the driver for you

Note that you will be restricted to the drivers for you version of Ubuntu that Canonical deem as stable. This may not give you the latest drivers, but should be safest.

[edit] Installing the drivers manually

  • PLEASE READ FIRST!

This portion of the guide works, since I have used it myself. I guess the rest of the guide is broken or it may be because the new driver doesn't support any of the older ATI cards anymore. Which cards does ATI no longer support? The ATI Radeon 9500-9800,X300-X2100,Xpress. See the complete list [1] here.If your card is on that list, you are restricted to the 9.3 driver - however since 9.3 driver doesn't support xorg-xserver 1.6, it will not work with Jaunty! This guide currently is for installing 9.4. !!!SO BE CAREFUL!!!

_______________________________________________

I recommend using copy and paste. However, you can Ctrl + C in your browser but you cannot Ctrl + V in the terminal. When you have copied something simply use Shift + Insert to paste into the terminal or go to the terminals menu, select edit and click paste. This method will ensure there are no typing mistakes and will greatly speed up the install process.

If you are using the x86_64 architecture (64 bit), be sure to install "ia32-libs" before proceeding!

Make sure universe and multiverse are enabled in your repository sources.

[edit] Before you start

Install the necessary programs

Terminal Command

sudo apt-get install build-essential cdbs fakeroot dh-make debhelper debconf libstdc++5 dkms

[edit] 1. Download the latest Catalyst package.

Download page: Catalyst 9.4. This package contains both the 32-bit and 64-bit driver.

Open a terminal window and switch to the directory you downloaded the installer to. (Example: $ cd Desktop)

Make sure your directory path does not contain spaces

[edit] 2. Create .deb packages.

Terminal Command

sh ati-driver-installer-9-4-x86.x86_64.run --buildpkg Ubuntu/jaunty

[edit] 3. Just in case

Write down or remember this series of Alt+PrntScr key combinations, just in case your screen should go black and Ctrl+Alt+F1 and Ctrl+Alt+Backspace doesn't work.

Alt+PrntScr+r, Alt+PrntScr+s, Alt+PrntScr+e, Alt+PrntScr+i, Alt+PrntScr+n, Alt+PrntScr+u, Alt+PrntScr+b

These keypresses will reboot the system safely. To remember the keypresses, remember this nonsensical phrase: "Raising Skinny Elephants Is Never Utterly Boring"

[edit] 4. Install .debs.

Install the debs, depending on if you're on a 32-bit or 64-bit system:

  • For 32-bit systems
Terminal Command

sudo dpkg -i xorg-driver-fglrx_*.deb fglrx-kernel-source_*.deb fglrx-amdcccle_*.deb

(This may fail due to a missing dpmk. If so install this first. Also check the version numbers (8.561) against the created debs)

  • For 64-bit systems
Terminal Command

sudo dpkg -i xorg-driver-fglrx_*.deb fglrx-kernel-source_*.deb fglrx-amdcccle_*.deb

Using tab completion can make this command easier.

[edit] 5. Additional 64-bit instructions

If you have a 64 bit install, the above dpkg command may complain that "Errors were encountered while processing: fglrx-amdcccle". This is because of a dependency of the amdccle package on 32 bit libraries. If you receive this error, issue the following command after the above dpkg command, which will force the installation of all of the 32 bit dependencies, and then the amdcccle package:

Terminal Command

sudo apt-get install -f

Catalyst 9.4 on 64-bit systems requires the --force-overwrite command in the above dpkg command:

Terminal Command

sudo dpkg -i --force-overwrite xorg-driver-fglrx_*.deb fglrx-kernel-source_*.deb fglrx-amdcccle_*.deb

Using tab completion can make this command easier.


[edit] 6. Generate a new /etc/Xorg.conf file

Terminal Command

sudo aticonfig --initial -f

in a terminal. If it doesn't give an error you should be good.

[edit] 7. Force use of /etc/Xorg.conf file

Some people find that changes to xorg.conf don't get used by the driver. To force the ati driver to adopt changes made to xorg.conf, type the following command:

Terminal Command

sudo aticonfig --input=/etc/X11/xorg.conf --tls=1

[edit] 8. Test your installation

Finally, reboot the computer and type

Terminal Command

fglrxinfo

into the terminal. If the vendor string contains ATI, you have installed the driver successfully. Release 9.4 looks like:

display: :0.0  screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon HD 4800 Series (This line may be different depending on what graphics card you are using.)
OpenGL version string: 2.1.8591

Please note: Depending on the particular ATI card that you own, you may or may not automatically have all of the relevant driver features enabled. R500 and R600 cards (X1xxx, HD series, and newer) in particular will need TexturedVideo enabled in Xorg.conf (rather than the traditional VideoOverlay) in order to support Xv accelerated video playback.

[edit] HOW TO UPDATE DRIVER

To update your driver to a new version (say 9.3 to 9.4) first disable the current driver through Ubuntu's Hardware Manager or use EnvyNG to remove the driver, then go to synaptic and search for "xorg-driver-fglrx" without the quotes and mark it for "Complete removal" and hit "Apply" then reboot your computer. Now simply repeat steps #1, 2, 4 and finally run these commends in a terminal:

Terminal Command

sudo aticonfig --initial -f

and

Terminal Command

sudo aticonfig --input=/etc/X11/xorg.conf --tls=1

then reboot.

It is very important that you COMPLETELY remove the old driver which includes the config files because when upgrading without uninstalling the old driver I noticed even though the new driver installed and worked there were some annoying problems that I experienced but after I completely uninstalled the driver then reinstalled it, it worked perfectly.

[edit] Tweaks

  1. Add tweaks as needed: http://ubuntuforums.org/showthread.php?t=849422
  2. Restart X, if it doesn't work, you can use the "vesa", "ati", "radeon" or "radeonhd" driver in the mean time, until you make it work.
  3. If you downgraded X to make fglrx work: enter synaptic, make sure all packages with "xorg" and "x11" are locked so that you can update and upgrade without worries.

Done! Now run amdcccle, glxgears, warsow etc :)

[edit] Issues

[edit] Installation

There are some system configurations on which none of the installation alternatives work with the latest 9.4 driver (please add; also please add if you got it to work in one of the listed setups):

  • Ubuntu 9.04 (x64) on x86_64 with Radeon HD4870X2: Framebuffer error, garbled screen.
  • Ubuntu 9.04 (x64) on x86_64 with Radeon HD 3300 (790GX): garbled screen.

[edit] Mesa drivers

If fglrxinfo reports that Indirect rendering by Mesa is in place, even though you have installed ATI driver, you might want to remove Mesa:

  • Remove the package xserver-xgl.
sudo apt-get remove xserver-xgl
Explanation: If you installed this previously in order to make compiz work, it will not allow direct rendering on your display. You can check out if this is what it causing the problem by running
DISPLAY=:0 glxinfo | grep render
If it returns an ATI renderer, it means that xgl is being displayed indirectly on the display 1. (Taken from [2])
Warning: This might make your compiz stop working as it is configured to use XGL. A solution might be to run the Envy script in order to configure compiz. Or, if Compiz stopped working due to "Composite" problem, check that the following is set in the /etc/X11/xorg.conf
Section "Extensions"
Option "Composite" "Enable"
EndSection




  • Check for AGP and DRI errors in /var/log/Xorg.0.log like these are:
(EE) fglrx(0): [agp] unable to acquire AGP, error -1023
(EE) fglrx(0): cannot init AGP
(EE) fglrx(0): atiddxDriScreenInit failed, GPS not been initialized.
(WW) fglrx(0): * DRI initialization failed! *
If you have Intel 8285P and E7205 chipsets and AGP not detected then you have to remove the i82875p_edac module and restart a some others:
rmmod i82875p_edac
rmmod fglrx
rmmod intel-agp
rmmod agpgart
modprobe agpgart
modprobe intel-agp
modprobe fglrx
Blacklist the modules e7xxx_edac so it doesn't start up again when booting - add the following line at the beginning of /etc/modprobe.d/blacklist:
blacklist i82875p_edac
This has been known to fix issues with -Mesa -AGP -DRI -Google earth and -suspend to RAM (s2ram).
Explanation: http://openwetware.org/wiki/Computing/Linux/Ubuntu




  • Check you are running the correct kernel.
Explanation: If you're upgrading from Gutsy to Hardy in some instances the Grub bootloader does not get updated and the new kernel is not loaded.
Run in a terminal:
uname -r
If the output starts with 2.6.22 or below you are not using the current kernel and the Ati drivers will not load properly.

If this doesn't help, try Ubuntu Gutsy Installation Guide#Verifying, or other links: [3], [4], [5].


[edit] Hang at logout

If you experience hangs when logging out (of X) it is probably due to the /etc/ati/authatieventsd.sh script looking for X authorisation files in the wrong place when it starts up. You can kill the hanging authatieventsd.sh processes from a console tty to allow the shutdown of the X server. This can be fixed permanently with:

sudo mkdir -p /var/lib/xdm/authdir
sudo ln -s /var/run/xauth /var/lib/xdm/authdir/authfiles

If that doesn't work then you can disable atieventsd with this command:

sudo /usr/sbin/update-rc.d -f atieventsd remove


Before the above commands verify that /etc/ati/authatieventsd.sh exists after build and install, if not just do  : (assuming that the installer is in your home directory)

sh ati-driver-installer-8-12-x86.x86_64.run --extract driver
sudo cp ~/driver/packages/Ubuntu/dists/jaunty/replacements/authatieventsd.sh /etc/ati/authatieventsd.sh

(jaunty is to be replaced by the name used at the building stage (intrepid,hardy,8.10,8.04,etc...)

sudo chmod +x /etc/ati/authatieventsd.sh

just reboot login and ctrl+alt+backspace to try

[edit] Suspend/Hibernation

Suspend hibernation works with the latest driver.

For ATI X1400, to get the laptop to wake up from suspend, I had to change the following in /etc/default/acpi-support:

SAVE_VBE_STATE=false

POST_VIDEO=false

ENABLE_LAPTOP_MODE=false
Comment: This is a little surprising, since the comments at the beginning of /etc/default/acpi-support seem to make it quite clear that those settings are ignored unless you add "acpi-support" to SUSPEND_METHODS. --Bewst 23:22, 19 December 2008 (UTC)

For Radeon 3200, to wake up from suspend, I had to add the following lines to /etc/X11/xorg.conf: (This settings is not good option, if you are using compiz-fusion or any other transparency-based thingie. Not working for HD 3850)

Section "Extensions"
Option "Composite" "Disable"
EndSection

Section "ServerFlags"
Option "AIGLX" "off"
EndSection

[edit] Can't remove fglrx with dpkg

If dpkg really-really refuses to remove an older fglrx-package, it might be needed to edit /var/lib/dpkg/diversions and remove a few lines. This is a hack and should be avoided.

[edit] This module/version combo is already installed

If you get this error-message, simply uninstall the previous version before installing the new one with:

Terminal Command

sudo dkms remove -m fglrx -v 8.522 --all

[edit] New kernel installed?

I found out that when getting a new kernel the fglrx kernel-module is not installed for your new kernel. You can do that by these simple steps:

Terminal Command

sudo dkms build -m fglrx -v 8.552 -k `uname -r`
sudo dkms install -m fglrx -v 8.552 -k `uname -r`

if amdcccle doesn't work and says Identifier is not a valid word. Use lower case letter in xorg.conf

:
Posted by Ritz®™

8.10 will be run natively from the portable device utilizing a persistent casper-rw loop file for saving and restoring changes.Ubuntu is a product of Canonical Ltd.

Ubuntu 8.10 Intrepid Ibex Screenshot

Ubuntu 8.10 USB Flash Drive 설치하기 위한 준비사항

  • Windows PC to perform conversion
  • Ubuntu 8.10 ISO
  • 2GB or larger USB flash drive (fat32 formatted)
  • U810p.exe (contains the files to do the conversion)

Ubuntu 8.10 USB Flash Drive 설치과정

  1. Download 한 후 U810p.exe를 실행시키면, PC에 자동으로 풀린다. AU810p 폴더가 자동생성된다.
  2. Download Ubuntu 8.10 ISO 를 다운로드 하고 U810p 폴더에 복사하여 준다.
  3. U810p 폴더에서 U810.bat 화일을 클릭하여 설치과정에 따라 설치하여 준다.
  4. 스크립터 실행이 끝나면 PC를 재시작하고 BIOS 나 혹은 Boot Menu 에서 USB device로 세팅하여 저장하고 재부팅한다.

진행과정에 따라 제대로 설치되었다면 Live Ubuntu 8.10 USB 로 부팅될 것이다.

Persistence size: 기본적인 casper-rw loop file 크기는 변경된 것이 1GB로 설정되어 있다. 만약 좀더 많은 공간을 원한다면 자기 usb크기에 맞는 다음 파일을 다운로드하여 기존 파일을 변경하여 준다.


DSDT 덤프 받는 커맨드

#sudo cat /proc/acpi/dsdt > dsdt.aml

:
Posted by Ritz®™

터미널 (Ctrl + Alt + T) 을 실행하여 다음 명령어를 입력한다.

sudo -s             <<<암호 입력하고 엔터 쳐도 암호는 안보인다.
tar -zxvf aircrack-ng-1.1.tar.gz.
cd aircrack-ng-1.1.tar.gz
make
make install

이게 전부다.


:
Posted by Ritz®™