Originally Posted by
bogan
Blank Screen crashes after upgrade to 11.04
Upgrading using the Update-Manager upgrade option, from Ubuntu 10.10 to Natty 11.04, ended with a crash to a blank screen with no mouse pointer, a flashing cursor and two flashing lights on the keyboard.
On rebooting I too have blank screen hang-up problems and Grub Menu difficulties, though the screen is not really black, it has a noticeable blue tinge.
After such a hang-up either the Grub Menu locked-up with no keyboard response or there was no Grub Menu but a blank screen with a white panel centred on it, with the text: "Analogue RGB 93KHz/59Hz. Out of range."
After some time, this panel scrolls at random around the screen a la Screen Saver, also with no keyboard response. These problems were overcome, if not cured, by using a 19" 1280x1024 Monitor instead of a 21.5" 1920x1080 Touch Screen Monitor, connected by a DVI-d cable instead of a VGA cable, and using a fully cold start re-boot after a crash;
ie. Holding the reset button down for at least 30 seconds, with the computer power switch off and the power cable removed.( A cure for other start-up sequence hang-ups suggested by the Medion Helpline).
The crashes after selecting Ubuntu 2.6.38-8, either normal, (modified as suggested by MAFoElffen in these threads,) or recovery, continued.
I repeatedly tried all the suggested ways of getting into a graphics screen that I could apply, without success. Most of which just did not work at all.
( For example, neither a 10.10 nor an 11.04 LiveCD gave a different Grub menu screen when 'esc' was pressed; whilst trying to edit the Grub files failed as the files were 'read only').
After trying the Mount sequence outlined on page 19 of the thread, I gave up and formatted the system file partition, downloaded the 11.04 .Iso file, ran it as a try-out and as it seemed to run with no problems I installed Natty from that.
Eureka! --- At least partially.---
It booted and ran with the 19" 1280x1024 Monitor connected by DVI-d cable. But with a VGA cable it still gave the 'Out of Range' message; however, it no longer hung-up, but, after an “Auto Adjusting” message, rebooted directly into Windows.
With the 21.5" 1920x1080 Touch Screen Monitor, connected by a DVI-d cable, after a crash, on re-booting it went from the Grub menu to a blank mauve screen and then hung-up on a black and white striped screen, (see 2. below). A fully cold reboot corrected this.
I also now have a different set of problems. Though I am not sure they belong to this thread:
1.The first few boots gave a Grub menu on a mauve (Magenta?) screen with the time-out counting down to default auto-boot. Later, however, the time-out no longer showed or operated, but at the moment it is working; though I have not altered any of the Grub files, or run update-grub, in the mean time.
2. On resuming from Suspend or Hibernation it crashes with a screen that is a series of black and white horizontal stripes; the mouse cursor is active but no keyboard response. The 'black' lines have a lot of single pixels of varied colours, which I suspected is a hangover from the screen-saver that was running when I put it to sleep. When booted from the LiveCD, going to Suspend or Hibernate crashed to a text screen with an 'state-error' message about the RaLink USB Wireless Adapter and an 'invalid RTChipset' ( the Wlan link works OK ) it then shut down and rebooted to the Grub menu.
3. The desktop has no 'Panels' and I could not find a way to create one, as the help file assumes there is a top and bottom Panel by default - hence there is no way that the Application and System Menus can be accessed, only listed for configuration: the Places menu is only spasmodically shown, depending on what windows are open. Right Mouse clicks in the title bar have no effect.
When booted from the LiveCD the Applications, Places and System/ Preferences/ Administration menu titles are in the top Panel, similarly to 10.10; but it does not have a Launchpad on the left of the screen, and there is a Notification Panel at the bottom..
The Gnome-Panel files from the 11.04CD are v. 2.32.1-0ubuntu6.3, whereas those from the installed 11.04 show those, also v. 2.32.1-0ubuntu6.5 updated 24/05/11.
{ Edit: I found an answer to this. See next entry. Switch to Ubuntu Classic.}
4. Booting into the recovery mode and selecting 'Resume' after running a File System Check, produced a hang-up at the stage of: “Checking Battery State...” with a flashing cursor but no keyboard response.
Should I start a separate thread for each of the above?
This refers to a Medion MS7318 MD 8822 PC with an Intel Core Duo E6400 CPU, which runs 32bit Vista and has a VIA Chip-set, but an nvidia GeForce 7650 GS graphics card with v173 driver, not the current one. Ubuntu10.04 is in sda6, 10.10 was in sda8 but was overwritten by 11.04 and no longer shows in the Grub menu.
I also have a Medion MD8342 running Windows7 with Ubuntu10.10 in sda6, on an external HDD; it would not install to the Boot Hdd as that already has four partitions.
After the successful(sic?) re-installation, now probably irrelevant, here are some more details:
The main problem seems to have been a failure to mount the 11.04 root, though it mounted from the Desktop and seemed normal when accessed. After a cold reboot, the 1.99~rcl Grub menu showed on a black screen and the time-out was not active nor referred to in the text; selecting the 2.6.38-8-generic recovery entry, produced a full screen of text including:
Code #
Autorun...Autorun DONE.
UFS Cannot open root device 'sda8' or unknown-block(0,0)
Please append a correct "root=" boot option; here are available options:
{ but no options followed, what did was:}
Kernel Panic - not syncing: UFS: unable to mount root fs on unknown-block(0,0)
Pid; 1, comm: swapper Not tainted 2.6.38-8-generic#42-Ubuntu
Call trace: {there followed a list of ten calls to various mount and other addresses ending with:}
kernel_thread_helper x0x6/0x10
End code.
It then locked up with a flashing cursor but no keyboard response.
Exactly the same response came when the first item was selected after editing the Grub menu to add 'nomodset' and splash '-verbose text' and deleting the 'vt.handoff=7' entry.
Sorry it is so long but you ask for as much detail as possible.
Any work round suggestions welcome.
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