[Ubuntu-x-swat] [Bug 1272781] Re: Often system freezes
This issue seem to appear using fglrx (which is a proprietary driver, not under xorg's responsibility) and after altering some backlight parameters (such as closing lid). You may try to update your BIOS to last revision (A10) and blacklist dell_laptop module as I wrote in my previous post. I didn't noticed any freeze since I've done that and I'm still using fglrx-update package as driver. However, there is still plainty of boring issues under Linux distributions with this laptop : fan always at high speed which is noisy and useless (can be fixed using i8kutils), slow boot (~3 minutes) when using power-saving GPU (Intel Chip) and fglrx(-update), backlight broken (can be fixed adding acpi_backlight=vendor to boot options, and you've done that considering your logs). USB3 behavior seem weird also. Dell Inspiron 7520 is a special edition, and there must be too few users to really interest devs. They have other priorities -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1272781 Title: Often system freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1272781/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1272781] Re: Often system freezes
Maybe a workaround : # echo blacklist dell_laptop /etc/modprobe.d/blacklist.conf It seems that dell_laptop is conflicting with something. Source : http://ubuntuforums.org/showthread.php?t=2192865 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1272781 Title: Often system freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1272781/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
[Ubuntu-x-swat] [Bug 1272781] Re: Often system freezes
I'm also facing this issue with the exact same computer (Dell Inspiron 7520). I guess it appears just after adding acpi_backlight=vendor to boot options (/etc/default/grub). Unfortunately, this option is the only way to be able to increase or decrease backlight. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1272781 Title: Often system freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1272781/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
