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New: VT switch causes system to lockup

Bugme-new Andrew Morton 3 participants 3 messages Jun 11, 2009 – Jun 12, 2009 1 message not in the archive Framebuffer layer

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A message that is not in the archive (sent off-list or not yet received): [email protected]/

#1 lore raw

(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface).

Quoted 28 lines · On Thu, 11 Jun 2009 18:42:30 GMT [email protected] wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=13509

           Summary: VT switch causes system to lockup
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.30-gentoo-r1
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Console/Framebuffers
        AssignedTo: [email protected]
        ReportedBy: [email protected]
        Regression: Yes

Hi there,

I just updated my amd64 system from a 2.6.27 kernel to a fresh 2.6.30-gentoo-r1 one. The system boots fine, but as soon as I switch to another VT the whole system lockups.

The screen just freezes, still showing the old content of VT1. ACPI buttons don't work, and ctrl-alt-del doesn't cause a restart. I haven't tried remote ssh login yet, nor magic SysRq (going to do this next).

Quoted 6 lines

To emphasize this: Just doing work on the first console is perfectly fine - the system is rockstable this way. So it's not some instability that is triggered by the VT switch.

Anyway, I'm using uvesafb here (gfx card is a integrated Radeon HD 3200). More informations to follow.

hm, 2.6.27->2.6.30 is a large hop.

Perhaps you were using vesafb in 2.6.27 and you're now using uvesafb?

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#2 lore raw
Quoted 2 lines · Andrew Morton

hm, 2.6.27->2.6.30 is a large hop.

Hi Andrew!

Yeah, I know. I was going to build a 2.6.29 though, since the fglrx driver seems to have some problems with the 30 one.
I'm going to check then if the problem also occurs with 29.

Quoted 3 lines

Perhaps you were using vesafb in 2.6.27 and you're now using uvesafb?

Nope, I can assure you that. :)
The 27 kernel has uvesafb activated and is also using it. In fact I just used make oldconfig to port the 27 config over to 30 (I'm not using any distro tools for kernel compiling, just plain make).

Greets,
Tobias

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#3 lore raw
Quoted 10 lines · Tobias Jakobi
Quoted 2 lines · Andrew Morton

hm, 2.6.27->2.6.30 is a large hop.

Hi Andrew!

Yeah, I know. I was going to build a 2.6.29 though, since the fglrx driver seems to have some problems with the 30 one.
I'm going to check then if the problem also occurs with 29.

I used the 29 before with uvesafb: There it was not a problem. Seems to be a regression between 29 and 30.

Quoted 5 lines
Quoted 5 lines

Perhaps you were using vesafb in 2.6.27 and you're now using uvesafb?

Quoted 9 lines

Nope, I can assure you that. :)
The 27 kernel has uvesafb activated and is also using it. In fact I just used make oldconfig to port the 27 config over to 30 (I'm not using any distro tools for kernel compiling, just plain make).

Greets,
Tobias

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