CentOS 5 Hardware :: Launching X11 Sometimes Crashes Core I5 Clarkdale With Black Screen
Aug 23, 2010
I am having a problem with my Core i5 system running Centos 5.5. The system will lock up with a black screen on occasion when launching X11 - this could happen at any time, from the install CD the first time it's being installed or trying a live CD, or the 3rd-10th time I launch startx from tty1 or sometimes just switching from tty1 to display0 or display1. When the crash occurs, sometimes the systems fans will all turn on loud, and the reset button becomes non-responsive. Other times the screen is black and it just sits there and I have to hard power off. There's nothing in /var/log/messages.
I tried a fix from an old post for 5.4 adding the option for "DDC" "false" in the xorg.conf file, and this did not help. I also ran all the system updates, no help.
The system is totally stable so long as I don't switch between ttys and X11 or launch new X11s (it's also stable under other OSs and has passed Memtest86+ 4).
Is this an instability with the Core i5 driver? The "Video Card" in the display options is set to "intel - Experimental modesetting driver for Intel Integrated Graphics Chipsets" - the "experimental" part is a little scary. Should I try setting the driver to "i810" as the 5.5 release notes recommends (again there's no onboard "chipset" this is an embedded graphics processor on the i5 CPU).
here's the getinfo.sh dump
--glen201
== BEGIN uname -rmi ==
2.6.18-194.11.1.el5 x86_64 x86_64
== END uname -rmi ==
[Code].....
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Mar 13, 2010
Finally i've got my new hardware! After assembling my System there was the first shock: I'm booting from DVD (CentOS 5.4 - 64bit) and everything's fine. When Anaconda attempts to start the X-Server, my Intel Clarkdale GPU is found and then there's a black Screen. Has anybody already tried this combination? Aunt Google wasn't very helpful :- /
My Hardware:
Intel Core i5 660 (integrated GPU)
ASUS P7H55-V
4 GB OCZ RAM
4 x 1TB SATA HDD
1 x 160GB IDE HDD
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May 22, 2010
I own a MB with H55 Chipset and a Core i3 540 with openSuse 11.2.I tried kernel 2.6.32 and 2.6.34 and the newest Xorg delete the xorg.conf and got a fine picture on the screen (same with xorg.conf and device "intel") Even HD MKV is possible. But in KDE I can only open one programm. If I try to open a second programm the desktop disappear and I get the KDM screen and have to login again and the former started programm is gone. Only if I start the programms via an open Terminal window the programms will run. I tried to delete all .kde(x) directories, but it�s the same after restart.Only if I use driver "fbdev" in the xorg.conf I get no problem. But then the screen is very slow.
Code:
hwinfo --gfx
09: PCI 02.0: 0300 VGA compatible controller (VGA)
[Created at pci.318]
UDI: /org/freedesktop/Hal/devices/pci_8086_42
[code].....
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My Computer's Specs:
CPU: AMD Phenom X6 1090T 3.2 GHz
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MB: Gigabyte GA-890GPA-UD3H
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Then I downloaded the alternate CD and started to install in the text mode. I could get passed installing the kernel and programs but right after adding a user/password, the text installer crashed with a black screen and system froze!
Now, I already have Windows 7 64 bits on this computer and have done all kinds of memory/hardware tests on it and it works fine. The CPU, GPU and the case is well ventilated so nothing is overheating. I also run heavy loads on Windows (MATLAB, Chess engine tournaments) for hours and hours and never had a crash. So I guess the hardware is fine.
Here are the specs of the system if it can help:
CPU: i7 950 GPU: ATI HD5870 (model Gigabyte GV-R587UD-1GD) RAM: 12 GB DDR-1666 Motherboard: Gigabyte GA-X58A-UD3R (rev. 2.0) Optical drive: Liteon ihbs112 USB Mouse and Keyboard
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#!/bin/sh
# Ensures an xterm is always available
( while true ; do xterm ; done ) &
[code]....
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Aug 16, 2010
I had a perfectly well running CentOS 5 system but with an old crappy monitor. I replaced the monitor by a bigger one, i did a monitor detect to make sure that CentOS would recognize the highest possible resolution. Then changed the display rsolution for the current user.
Now when i login as root just a black screen appears with a white mouse pointer and then nothing. I already deleted all the contents in the home directory /root but no improvement.
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Jan 26, 2011
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Dec 29, 2010
I am using RHEL 4.7 (32bit) on HP Proliant 380G6 series server. We are using Electric Cloud Agents on these servers. Nowadays we are facing some memory issues and its creates some kernel panic and then restarts the server. When i reported the issue to my application team, they asked me to come with the core dump. I googled it enough, then i set ulimit value as unlimited. (previously it was 0, then i made a entry in /etc/profile file as follows
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The attached document has the kernel panic logs
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Nov 30, 2009
I'm a newbie to installing LINUX (was an Oracle DBA for many years) and I am having trouble getting the dual head function to work with my Sony Vaio laptop. I just select a generic LCD with the screen resolution that I want, but when I startx, I briefly get the login window (terminal), then everything goes blank and I have to unplus the samsung monitor and reboot to be able to have a screen again. I have tried the fn + f keys and that doesn't help.
Here is the hardware:
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Jan 27, 2010
We have a small cluster of 20 HP systems, all running CentOS 5.3 in an NFS-root environment. Half are quad-socket, quad-core Xeon E7340 @ 2.40GHz (total 16 cores), the other half are 8-socket, quad-core Opteron 8354 (total 32 cores). All systems have a Mellanox Infiniband adapter ("Mellanox Technologies MT25418 [ConnectX VPI PCIe 2.0 2.5GT/s - IB DDR / 10GigE] (rev a0)")
With kernel 2.6.18-128.1.6.el5, infiniband works fine on all systems.
With the update to kernel 2.6.18-164.11.1.el5 (and both types of node running the same NFS-root image), the 16-core Xeons still work fine. Infiniband no longer works on the 32-core Opterons. Specifically, either the ib0 interface fails to appear, or it does appear but when configured with an IP address, doesn't actually work. In either case, loading the IB kernel modules takes a long time, but I haven't instrumented the load script yet to see which module, if any, is at fault. More errors listed below.
However, if I tweak the BIOS of the 32-core systems to reduce the per-socket core count to 2 (so effectively 8-socket, dual-core, down to a total of 16 available cores), Infiniband starts working again. Putting it back to 32-cores makes it fail. Booting the older kernel makes it work again. In summary: old kernel, IB works on all systems. Newer kernel, IB only works on 16-core systems.
Updating the IB firmware from 2.5.0 to 2.7.0 (latest available) doesn't help. I also did a full 'yum update' to make sure that libmlx4, openibd all other associated packages were up-to-date. Doesn't help either.
Some errors that appear on 32-core nodes:
ib_query_port failed (-16) for mlx4_0
ib_query_port failed (-16) for mlx4_0
mlx4_core 0000:04:00.0: SW2HW_MPT failed (-16)
mlx4_core 0000:04:00.0: SW2HW_MPT failed (-16)
[Code]....
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Jun 1, 2010
I'm trying to setup apache2 to drop a core file when it crashes. I know that you need to set the CoreDumpDirectory directive in /etc/apache2/apache2.conf and run "ulimit -c unlimited" from the command line (and restart apache after the ulimit command). But, on a reboot, even though the output of "ulimit -a" shows unlimited, apache2 will not create a core dump file unliess you set ulimit -c unlimited again and restart apache2. There must be a way to configure apache2.conf or something so that ulimit -c unlimited is set prior to apache2 starting, no?
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