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From: Pavel Machek <pavel@ucw.cz>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <llong@redhat.com>,
	kernel list <linux-kernel@vger.kernel.org>,
	mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
	x86@kernel.org, hpa@zytor.com, peterz@infradead.org,
	will@kernel.org, miriam.rachel.korenblit@intel.com,
	linux-wireless@vger.kernel.org, Petr Mladek <pmladek@suse.com>,
	John Ogness <jogness@linutronix.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>, Tejun Heo <tj@kernel.org>,
	Simona Vetter <simona@ffwll.ch>,
	Thierry Reding <thierry.reding@gmail.com>
Subject: Re: locking problems in iwlwifi? was Re: 6.16-rcX: crashing way too often on thinkpad X220
Date: Fri, 25 Jul 2025 21:05:38 +0200	[thread overview]
Message-ID: <aIPVghzeOTawpTeT@duo.ucw.cz> (raw)
In-Reply-To: <87v7ngpa43.ffs@tglx>

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Hi!

> Enable framebuffer and framebuffer console. Add console=tty0 to the
> kernel command line.
> 
> Log into FB console and do
> 
> #  echo -e '\033[?17;0;64c'
> 
> which enables the software cursor, which in turn enables the above
> conditional invocation of fbcon_del_cursor_work(). Then force a printk
> 
> # echo h >/proc/sysrq-trigger
> 
> and watch the show.

Heh, fun. Yes, long, long time ago I enabled software cursor. I
don't normally use the console these days, but I switched to console
for debugging the wireless problem -- hoping I would catch some kind
of backtrace on the console.

Best regards,
								Pavel

-- 
I don't work for Nazis and criminals, and neither should you.
Boycott Putin, Trump, and Musk!

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  reply	other threads:[~2025-07-25 19:05 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-22 17:35 6.16-rcX: crashing way too often on thinkpad X220 Pavel Machek
2025-07-23 15:06 ` Pavel Machek
2025-07-23 15:11   ` Dave Hansen
2025-07-23 20:35     ` Pavel Machek
2025-07-23 15:42   ` locking problems in iwlwifi? was " Pavel Machek
2025-07-23 17:13     ` Johannes Berg
2025-07-23 20:37       ` Pavel Machek
2025-07-24  8:50         ` John Ogness
2025-07-23 21:42       ` Pavel Machek
2025-09-15  9:32       ` Pavel Machek
2025-07-23 17:31     ` Thomas Gleixner
2025-07-23 17:32       ` Thomas Gleixner
2025-07-24 17:15         ` Pavel Machek
2025-07-24 17:51           ` Waiman Long
2025-07-24 17:55             ` Waiman Long
2025-07-24 21:24               ` Thomas Gleixner
2025-07-25  0:33                 ` Hillf Danton
2025-07-25 15:23                 ` Thomas Gleixner
2025-07-25 19:05                   ` Pavel Machek [this message]
2025-07-24 19:07             ` Pavel Machek
2025-07-24 19:22               ` Waiman Long
2025-07-24 22:21                 ` Thomas Gleixner
2025-07-25  1:56                   ` Waiman Long
2025-07-24 19:45             ` John Ogness
2025-07-25  0:16               ` Waiman Long
2025-07-25 13:44                 ` Thomas Gleixner
2025-07-25 19:38                   ` Waiman Long

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