The blank screen problem is still present in my case on Ubuntu 18.04 using a
Dell 5570 machine.
Upgrading to kernel 4.17.2-041702 has solved the problem.
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*** This bug is a duplicate of bug 1742602 ***
https://bugs.launchpad.net/bugs/1742602
Upgrading kernel to 4.17.2-041702 has solved the problem for me.
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On Dell E5570,
gdbus call --system --dest org.freedesktop.UPower --object-path
/org/freedesktop/UPower/KbdBacklight --method
org.freedesktop.UPower.KbdBacklight.GetBrightness
works well, returns 0, 1, or 2, depending on keyboard backlight level
OFF, DIM, FULL.
But gdbus call --system --dest org.
I am adding Dell E5570. Backlight turns on at boot and does not switch
off ever. Ubuntu 16.04 with unity-settings-daemon version
15.04.1+16.04.20160209-0ubuntu2. Workaround at #47 does not help either.
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With kernels 3.7 and 3.8 bug is resolved.
** Changed in: linux (Ubuntu)
Status: Incomplete => Fix Released
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Title:
[Dell Lattitude E6420]
Bug fixed in upstream kernel: 3.7.0-030700rc4-generic
** Tags added: kernel-fixed-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Summary changed:
- [Dell Lattitude E6420] Boot fails
+ [Dell Lattitude E6420] Boot fails with kernel 3.5.0
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Title:
[Dell Lattitude E6420] Boo
** Attachment added: "apport.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1071699/+attachment/3415216/+files/apport.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "dmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1071699/+attachment/3415215/+files/dmesg.txt
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Title:
[D
I could collect two log files: dmesg and apport.
1. dmesg.txt
I booted in recovery mode and then stored dmesg.
System was hanging for 61 seconds by line 761:
[2.454438] udevd[115]: starting version 175
And then an error message showed from line 769:
[2.477182] [drm:drm_pci_agp_init] *ERROR
3.5.0-17 64bit
** Package changed: ubuntu => linux-meta (Ubuntu)
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Title:
[Dell Lattitude E6420] Boot fails
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Public bug reported:
Kubuntu 12.10 64bit fails booting on my Dell Lattitude E6420 notebook.
Previous version 12.04.1 worked fine. After upgrade to 12.10 system no more
boots.
Kubuntu 12.10 64bit DVD does not boot, either, with same symptoms.
When using the old kernel (3.2.0) and initramfs, syste
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