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Hello everyone,
for quite some time my system installation struggles with boots. For now I don't know how to provide you with a lot of debugging information so apologies if this seems vague. Please suggest some ways on how to extract more from logs.
The laptop is running in BIOS legacy mode. Bootloader doesn't cause any problems. I select the system and systemctl takes over. It mounts the sda2 partition "cleanly" and then it stops on a message
[ 1.829671] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-devel@lists.sourceforge.netI don't think that's very significant though as this message appears also on successful boots. At this stage I am waiting for sda3 but the boot process freezes. I cannot get to tty and the only way to go forward is a hard reset. On the second run the system usually boots fine. Unfortunately I cannot find the journal entry for the failed boot when I run journalctl --list-boots.
I didn't use to have that issue, but I also cannot quite recall when it started happening. It may have been after a kernel update two or three months ago. I disregarded it as the issue was occuring infrequently and I was hoping it will go away with the next update. I'll contact the acpi-devel list now, but I don't think this is relevant. I am afraid it may be something else or faulty hardware which would explain the randomness perhaps.
Please let me know if you have any thoughts on that.
Last edited by AlmostSurelyRob (2014-11-10 10:12:36)
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I'm not sure if you're on the first or second gen Carbon X1, but I can give you a few details from my config in case it will help you debug.
My X1 is a first gen, bios legacy and I don't experience the booting issue (kernel 3.17.1-1) or the thinkpad_acpi error:
#dmesg |grep brightness
[ 3.574794] thinkpad_acpi: detected a 16-level brightness capable ThinkPad
[ 3.575286] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
[ 3.575287] thinkpad_acpi: Disabling thinkpad-acpi brightness events by default...And I appended the kernel parm
acpi_osi="!Windows 2012"to grub.cfg (see the https://wiki.archlinux.org/index.php/Le … _X1_Carbon)
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Thanks! I believe that helped with the booting problem. I should have replied earlier, but I was testing it through the week and not a single freeze. I still get unsupported brightness error though. By the way, I should have read the wiki pages for this laptop. Perhaps when I was setting it up the page wasn't so well developed, but on the other hand I almost didn't need as everything worked out of the box (apart from this booting issue it seems).
I am marking this as solved, I will invest some time to chase that brightness issue. Thanks again.
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