Ubuntu
kubuntu-meta package

System hangs when switching user

Bug #46913 reported by Vyacheslav Rodionov
12
Affects Status Importance Assigned to Milestone
kubuntu-meta (Ubuntu)
Invalid
Medium
Unassigned

Bug Description

Binary package hint: kubuntu-desktop

Bug appears in Kubuntu Dapper.

Can't switch user through KDE's menu "Switch User->Start New Session".

My system freezes after I press "Start New Session". First it switches to text console and than t hangs up. Nothing helps after it - I even can't reboot with Ctrl+Alt+Del.

I don't really know what backtraces could help there.
What information about my system is necessary.

Here are the things that maybe helpful:

#xdriinfo
Screen 0: atiogl_a

#fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: FireMV 2400 PCI DDR Generic
OpenGL version string: 1.3.1060 (X4.3.0-8.24.8)

#lspci
0000:00:00.0 Host bridge: Intel Corporation 82855PM Processor to I/O Controller (rev 03)
0000:00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev 03)
0000:00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03)
0000:00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03)
0000:00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 03)
0000:00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 03)
0000:00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 83)
0000:00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 03)
0000:00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 03)
0000:00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 03)
0000:00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)
0000:00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 03)
0000:01:00.0 VGA compatible controller: ATI Technologies Inc Radeon R250 Lf [FireGL 9000] (rev 02)
0000:02:04.0 Network controller: Intel Corporation PRO/Wireless LAN 2100 3B Mini PCI Adapter (rev 04)
0000:02:06.0 CardBus bridge: O2 Micro, Inc. OZ601/6912/711E0 CardBus/SmartCardBus Controller
0000:02:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB21 IEEE-1394a-2000 Controller (PHY/Link)

#lsmod
Module Size Used by
isofs 38496 0
nls_utf8 2240 1
udf 94628 0
nfs 238792 1
bluetooth 54084 0
nfsd 241316 13
exportfs 6528 1 nfsd
lockd 67944 3 nfs,nfsd
sunrpc 159484 10 nfs,nfsd,lockd
autofs4 21060 0
speedstep_centrino 8752 0
cpufreq_userspace 6496 1
cpufreq_stats 6688 0
freq_table 4928 2 speedstep_centrino,cpufreq_stats
cpufreq_powersave 1920 0
cpufreq_ondemand 7752 0
cpufreq_conservative 9000 0
video 16324 0
tc1100_wmi 6884 0
sony_acpi 5580 0
pcc_acpi 12416 0
hotkey 11492 0
dev_acpi 11236 0
container 4608 0
button 6704 0
acpi_sbs 20172 0
battery 9988 1 acpi_sbs
ac 5220 1 acpi_sbs
i2c_acpi_ec 5120 1 acpi_sbs
i2c_core 22848 1 i2c_acpi_ec
nls_iso8859_1 4224 2
nls_cp437 5888 3
vfat 14496 3
fat 55548 1 vfat
reiserfs 284016 1
ipv6 286912 24
md_mod 76052 0
ieee80211_crypt_wep 5280 0
ieee80211_crypt_tkip 11296 0
ieee80211_crypt_ccmp 8064 0
sr_mod 17988 0
sbp2 24996 0
lp 12356 0
ide_disk 19200 0
fglrx 479996 32
pcmcia 41948 0
joydev 10432 0
nsc_ircc 25120 0
irda 217916 1 nsc_ircc
crc_ccitt 2240 1 irda
yenta_socket 30124 1
rsrc_nonstatic 14624 1 yenta_socket
ipw2100 93812 0
pcmcia_core 45272 3 pcmcia,yenta_socket,rsrc_nonstatic
ieee80211 38920 1 ipw2100
ieee80211_crypt 6528 4 ieee80211_crypt_wep,ieee80211_crypt_tkip,ieee80211_crypt_ccmp,ieee80211
snd_intel8x0 35740 4
psmouse 40036 0
snd_ac97_codec 99808 1 snd_intel8x0
snd_ac97_bus 2400 1 snd_ac97_codec
serio_raw 7748 0
parport_pc 37988 1
parport 39400 2 lp,parport_pc
snd_pcm_oss 56448 0
snd_mixer_oss 20544 2 snd_pcm_oss
hw_random 5716 0
snd_pcm 96676 4 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_timer 26884 2 snd_pcm
snd 60004 10 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore 10784 2 snd
snd_page_alloc 11304 2 snd_intel8x0,snd_pcm
shpchp 49504 0
pci_hotplug 30788 1 shpchp
intel_agp 24700 1
agpgart 36784 2 fglrx,intel_agp
sg 40096 0
tsdev 8032 0
evdev 10176 2
ext3 148104 3
jbd 65876 1 ext3
sd_mod 20448 10
usbhid 40992 0
ide_generic 1504 0
ohci1394 37524 0
ieee1394 306520 2 sbp2,ohci1394
uhci_hcd 35408 0
ide_cd 35780 0
cdrom 41408 2 sr_mod,ide_cd
piix 11652 1
generic 5124 0
thermal 13768 0
processor 26344 2 speedstep_centrino,thermal
fan 4836 0
capability 4968 0
commoncap 7328 1 capability
usb_storage 79488 8
scsi_mod 145960 5 sr_mod,sbp2,sg,sd_mod,usb_storage
ehci_hcd 33800 0
usbcore 137700 5 usbhid,uhci_hcd,usb_storage,ehci_hcd
vesafb 8636 1
fbcon 43904 72
tileblit 2784 1 fbcon
font 8320 1 fbcon
bitblit 6464 1 fbcon
softcursor 2304 1 bitblit

Steps to reproduce:
1. Start KDE.
2. Enter KDE Menu and select "Switch User->Start New Session".
3. Press "Start New Session" button.

What happens:
4. System hangs up.

Revision history for this message
Yuriy Kozlov (yuriy-kozlov) wrote :

Thank you for filing this bug.

Does it happen if you use the "ati" driver instead of the fglrx driver?
Does it still happen with a newer version of Kubuntu?

Changed in kubuntu-meta:
status: Unconfirmed → Needs Info
Revision history for this message
Yuriy Kozlov (yuriy-kozlov) wrote :

This sounds the same as bug 45108, which is fixed.

Revision history for this message
Vyacheslav Rodionov (bepcyc) wrote :

Anyway, I use nVidia now.
No more ATI in my computer!! ;)

Revision history for this message
Andrew Ash (ash211) wrote :

So is it still a problem for you, Vyacheslav?

Revision history for this message
Vyacheslav Rodionov (bepcyc) wrote :

no

Revision history for this message
Laur Mõtus (vprints) wrote : Re: [Bug 46913] Re: System hangs when switching user

But before You changed the videocard, it was a problem?
I.e. that if you'd still have an ATI card?

2007/2/21, Vyacheslav Rodionov <email address hidden>:
>
> no
>
> --
> System hangs when switching user
> https://launchpad.net/bugs/46913
>

Revision history for this message
Vyacheslav Rodionov (bepcyc) wrote :

of course, it was a big problem for me

Revision history for this message
Andrew Ash (ash211) wrote :

Thanks for the bug report. Since it's not a problem anymore, I'm closing the bug. Thanks for your contribution to Kubuntu!

Changed in kubuntu-meta:
status: Needs Info → Rejected
Revision history for this message
Laur Mõtus (vprints) wrote :

But hey, he changed the video card's brand and that ended the bug for him,
but for someone else with ATI it should still be problem?

2007/2/21, Andrew Ash <email address hidden>:
>
> Thanks for the bug report. Since it's not a problem anymore, I'm
> closing the bug. Thanks for your contribution to Kubuntu!
>
> ** Changed in: kubuntu-meta (Ubuntu)
> Status: Needs Info => Rejected
>
> --
> System hangs when switching user
> https://launchpad.net/bugs/46913
>

Revision history for this message
Andrew Ash (ash211) wrote :

That's true. But since the driver he was using was fglrx (ATI's proprietary driver) instead of the opensource driver (ati), there's not a whole lot we as the opensource community can really do about it. Closed source software is difficult to fix!

The proper procedure to get that fixed would be to notify ATI somehow. I'm not sure how to do that myself, since I don't own any ATI cards and haven't ever interacted with the company.

Revision history for this message
Laur Mõtus (vprints) wrote :

Well, You are right.

2007/2/22, Andrew Ash <email address hidden>:
>
> That's true. But since the driver he was using was fglrx (ATI's
> proprietary driver) instead of the opensource driver (ati), there's not
> a whole lot we as the opensource community can really do about it.
> Closed source software is difficult to fix!
>
> The proper procedure to get that fixed would be to notify ATI somehow.
> I'm not sure how to do that myself, since I don't own any ATI cards and
> haven't ever interacted with the company.
>
> --
> System hangs when switching user
> https://launchpad.net/bugs/46913
>

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